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- Gate 1/Pre-algebra
- 3rd Grade Worksheets
- Greatest Common Factor & Least Common Multiple
- Decimals
- Decimals Puzzle
- Fractions Exercises
- Mixed Numbers
- Percentages
- Converting Fractions Decimals Percentages
- Word Problems
- Angles & Triangles Exercise
- Middle School Geometry
- Conversions
- Negative Numbers
- Mean Median Mode
- Scientific Notation
- Pre-Algebra Review 1
- Pre-Algebra Review 2
- Pre-Algebra Review 3
- Gate 2/Algebra
- Numbers
- Algebra Preview
- Algebra Preview 2
- Exponents & Roots and Order of Operations
- Negative Exponents and Variables
- Exponents and Exponential Equations
- Inequalities and Number Line
- Absolute Value and Inequalities
- Absolute Value and Inequalities Videos
- Linear Equations
- Linear Equations 2
- Linear Systems
- Linear Systems 2
- Slope & Linear Equations Videos
- Linear Programming (Optimization)
- Story Graphs
- Inverse Functions
- Average Midpoint Distance Test
- Radicals
- Intro to Polynomials
- Factoring Quadratics
- Simplifying Rational Polynomials
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- f(x) and Piecewise functions
- Probability
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- Word Problems 2
- Algebra Word Problem Videos
- Algebra Word Problem Videos 2
- Domain, Range, Functions, & Relations
- Algebra Review 1
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- Algebra Review 3
- Algebra Review 4
- Gate 3/Geometry
- Geometry Introduction
- Angle Properties
- Triangle Characteristics
- Triangle Restrictions
- Polygons
- Special Quadrilaterals 1
- Special Quadrilaterals 2
- Logic and Reasoning
- Always Sometimes Never
- Congruent Triangles Topics
- Proofs & Postulates 0
- Proofs & Postulates 1
- Proofs & Postulates 2
- Diagramless and Detour Proofs
- Indirect Proofs
- Equidistance Theorem
- Parallel Lines Cut by Transversals
- Planes Properties and Proofs
- Triangle Median Altitude Bisectors
- Midpoint and Distance
- Similarity and Proportions 1
- Similarity and Proportions 2
- Similarity and Proportions 3
- Similarity and Proportions 4
- Means Extremes and Right Triangles
- Pythagorean Theorem & Distance
- Pythagorean Theorem 2 (more questions)
- Area and Perimeter of Polygons 1
- Area and Perimeter of Polygons 2
- Area and Perimeter of Complex Shapes
- Surface Area
- Volume
- Surface Area and Volume (Advanced)
- Circles Introduction
- Circles and Geometry
- Circles and Inscribed Figures
- Circles Review (Honors)
- Circles Review (Advanced)
- Circles Practice Test
- Word Problems
- Coordinate Geometry 1
- Coordinate Geometry 2
- Coordinate Geometry 3 Drawing Exercise
- Coordinate Geometry 4 - Advanced
- Locus of Points
- Geometry Construction Videos 1 - Intro
- Geometry Construction Videos 2- Intermediate
- Geometry Construction Videos 3- Advanced
- Geometry Review 1
- Geometry Review 2
- Geometry Review 3
- Geometry Review 4
- Gate 4/Trigonometry
- Angle Measurement
- Arc Length & Sector Area
- Right Triangle Review
- Trigonometry Introduction
- Word Problems
- Unit Circle and Trigonometry Functions
- Inverse Trig Values
- Law of Sines and Cosines I
- Law of Sines and Cosines II
- Law of Sines and Cosines III
- Navigation
- Periodic Functions I - Sine (Graphs)
- Periodic Functions II - Cosine
- Periodic Functions III - Tangent
- Periodic Functions IV - Reciprocals
- Periodic Inverse Functions
- Periodic Trig Function Models
- Trig Identities I - Introduction
- Trig Identities II - Double Angles
- Trig Identities III - Solving and Graphing
- Trig Identities IV - Review Test
- Trig Identities V - Honors
- Polar Coordinates and Complex System
- Polar Equations and Graphs
- Trigonometry Extras
- Trigonometry Review 1
- Trigonometry Review 2
- Trigonometry Review 3
- Trigonometry Review 4
- Gate 5/Algebra II
- Algebra I/Geometry Review
- Algebra II Preview
- Inverses
- Graphing I - Parent Functions & Transformations
- Graphing II - Translation, Reflection, & Rotation
- Graphing III Identifying Functions
- Graphing Functions Videos
- Absolute Value Graphing Topics
- Double Absolute Values
- Composite Functions Topics
- Quadratics Overview
- Completing the Square & Quadratic Formula
- Identifying Quadratic Equations from Points
- Comparing Equations
- Modeling Word Problems
- Polynomials: Factors, Roots & Theorems I
- Polynomials: Factors, Roots, & Theorems II
- Polynomials: Factors, Roots, & Theorems III (Honors)
- Solving Rational Equations
- Sketching Rational Expressions I
- Sketching Rational Expressions II
- Reciprocal Functions
- Direct and Inverse Variation
- Word Problems
- Conics I - Circles & Ellipses
- Conics II - Hyperbolas and Parabolas
- Conics III - Review Properties
- Conics IV - Systems
- Conics V - More Advanced
- Conics VI - Honors Topics
- Rotation of Axes
- Semicircles
- Transformations of Functions (Advanced)
- Matrix I Examples
- Matrix II and Determinants
- Matrix III Coordinate Geometry
- Imaginary and Complex Numbers
- Rational Exponents & Radical Equations
- Variable Exponents and Higher Roots
- Exponents and Exponential Equations (Honors)
- Logarithms and Exponents I
- Logarithms and Exponents II
- Logarithms and Exponents III (Advanced)
- Growth Decay Interest & Half-Life
- Logarithms Practice Test
- Combinations, Permutations, & Counting
- Sequences & Series I
- Sequences & Series II
- Sequences & Series III
- Binomial Expansion Theorem
- Math Induction
- Parametric Equations
- Vectors I
- Vectors II
- 3 Dimensional Space and Vectors
- 3-Dimensional Space and Sketches
- Partial Fractions
- Algebra II Notation & Operations Puzzle
- Algebra II review 1
- Algebra II review 2
- Algebra II review 3
- Algebra II review 4
- Algebra II review 5
- Algebra II review Equations and Inequalities
- Pre-Calculus Advanced Questions
- Gate 6/Calculus
- Algebra II/Trig Practice Exam
- Limits and Asymptotes
- Definition of Instantaneous Rate of Change
- Continuity & Differentiability
- Intro to Derivatives
- Derivative Rules: Product/Quotient, Chain & Power
- Derivative Rules: Trigonometry Functions
- Chain Rule
- Derivative Rules: Log, Exponents, & Trig functions
- Applications of derivatives
- Mean Value Theorem
- Derivative max/min word problems
- Critical Values from Derivatives
- Sketching Graphs 1: 1st and 2nd derivatives
- Sketching Graphs 2: anti-derivatives
- Position Velocity Speed Acceleration
- Implicit Differentiation
- Related Rates of Change
- Using Derivatives in Economics
- Intro to Integrals
- Antiderivatives and Integrals
- Fundamental Theorem of Calculus (Part 1)
- Trapezoid Rule
- Definite Integrals & Fundamental Theorem of Calculus (Part 2)
- Definite Integrals Concepts and Applications
- Definite Integrals and Area Between Curves
- Natural log and e
- Improper Integrals
- Volumes of Solids 1
- Volumes of Solids 2
- Arc Length
- Trig Substitutions
- Separable Differential Equations
- Using Integrals in Economics
- Series Convergence and Divergence
- Calculus Extras
- Calculus Review 1
- Calculus Review 2
- Calculus Review 3 AP Multiple Choice
- Calculus Review 4 AP Free Response
- Calculus Review 5 AP Multiple Choice 2
- Gate 7/Statistics
- Airport Terminal 2
- Gate A/Instant Answers
- Math Resources: Definitions
- Math Resources: Community Help
- Math Resources: Calculators
- TI nspire cx cas calculator tutorial 0
- TI nspire cx cas calculator tutorial 1
- TI nspire cx cas calculator tutorial 2
- TI nspire cx cas calculator tutorial 3
- TI nspire cx cas calculator tutorial 4
- TI nspire cx cas calculator tutorial 5
- TI nspire cx cas calculator questions
- TI nspire cx cas calculator project 1
- TI nspire cx cas calculator project 2
- TI nspire cx cas calculator project 3
- TI nspire cx cas calculator project 4
- TI nspire cx cas calculator project 5
- TI nspire cx cas calculator project 6
- Gate B/ACT/SAT Topics
- ACT subjects to know
- SAT subjects to know
- ACT/SAT Quick Quiz 1
- ACT/SAT Quick Quiz 2
- ACT/SAT Quick Quiz 3
- ACT/SAT Quick Quiz 4*
- Mental Math Speed Drills
- ACT Practice Test 1
- ACT Practice Test 2
- ACT Practice Test 3
- ACT Practice Test 4
- ACT Practice Test 5
- ACT Geometry Practice Test 1
- ACT Trigonometry Practice Test 1
- SAT Practice Test 1
- SAT Practice Test 2
- SAT Practice Test 3
- SAT Practice Test 4*
- SAT Practice Test 5
- Challenging ACT/SAT practice test 1
- Challenging ACT/SAT practice test 2
- ACT Hidden Message Puzzle 1
- ACT Hidden Message Puzzle 2
- Overview & Random Suggestions
- SAT Subject Test Level 2 Topics to know
- SAT Math Level 2 Practice Test A
- SAT Math Level 2 Practice Test B
- SAT Math Level 2 Practice Test C
- SAT Math Level 2 Practice Test D
- SAT Math Level 2 Practice Test E
- SAT Math Level 2 Practice Test F
- SAT 2 Hidden Message Puzzle
- Gate C/Math Places around the Virtual World
- Gate D/Webcomics
- Math Comics Archive (Fall 2011)
- Math Comics Archive (Winter 2012)
- Math Comics Archive (Spring 2012)
- Math Comics Archive (Summer 2012)
- Math Comics Archive (Fall 2012)
- Math Comics Archive (Winter 2013)
- Math Comics Archive (Spring 2013)
- Math Comics Archive (Summer 2013)
- Math Comics Archive (Fall 2013)
- Math Comics Archive (Winter 2014)
- Math Comics Archive (Spring 2014)
- Math Comics Archive (Summer 2014)
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- Math Comics Archive (Spring 2018)
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- Math Comics Archive (Fall 2018)
- Math Comics Archive (Winter 2019)
- Math Comics Archive (Spring 2019)
- Math Comics Archive (Summer/Fall 2019)
- Math Comics Archive (Winter/Spring 2020)
- Gate E/Destinations
- Travel Checklist
- Featured Destination math enrichment
- Random Places to Visit
- 2012 Puzzle
- Super Bowl XLVI
- I (Heart) Symmetry
- Prime Time
- Play Ball
- When in Rome
- Live at the Mobius Strip
- Trick Shots in the Pool Hall
- 2013 Puzzle
- 8 - wonder of the world
- In the Dog house
- parallelogram parking
- slice of pi
- April 15th Tax Relief
- Math Photos
- 2014 Puzzle
- 2015 Puzzle
- What are the odds?
- In-Flight Entertainment (Videos)
- Spare Parts
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- Travel Log Collection
- About Us
- 2013 US Road Trip with Oscar the Dog
- 2013 US Road Trip with Oscar (Part II)
- 2014 US South Road Trip with Oscar
- 2014 US Summer Road Trip with Oscar (East)
- 2014 US Summer Road Trip with Oscar (South)
- 2015 Summer Road Trip with Oscar (Canada West)
- 2015 Summer Road Trip with Oscar (Canada East)
- 2017 Summer Road Trip with Norway the Husky (US - Canada East)
- 2017 Summer Road Trip with Norway the Husky (Canada - US West)
- 2018 Summer Road Trip with Norway the Husky (US - Canada East)
- 2018 Summer Road Trip with Norway the Husky (Canada - US West)
- 2019 US South Road Trip with Norway the Husky
- 2019 Summer Road Trip with Norway the Husky (around Lake Michigan)
- 2021 Summer Road Trip with Norway the Husky (The Heartland)
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Congruent Triangles Topics
Math Comic #291 - "Framed Portrait" (8-23-17)
Exercises that relate triangle congruency to other topics.
Connections
Check out teaching and tutoring resources from the mathplane stores at TES and TeachersPayTeachers
Information
- Translations
- Rotations
- Side-Angle-Side
- Reflection
- Angle-Angle-Side
