This page provides a list of educational videos related to Triangles. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Triangles.

Triangles and Triangle Shapes - a Quick Kindergarten Online Learning Lesson - The Montessori Way

By Learn And Play Montessori School

Triangles are a key shape and geometry is a key pre-STEM skill for our Kindergarten children. Check out our fun video, and help your child stay learning.

Triangles

By MathPlanetVideos

Find out whether the triangles are right, isosceles, acute, scalene, obtuse or equilateral

Geometry -- Lesson 4.3 -- Congruent Triangles

By MisterRutter

This geometry lesson explains congruent triangles: triangles with the same measure sides and angles.

Triangle Congruence by SSS and SAS - How to Prove Triangles Congurent

By MrPilarski

YouTube presents Triangle Congruence by SSS and SAS - How to Prove Triangles Congurent, an educational video resource on math.

Congruent Figures Part 2 - Proving Triangles Congruent - Definition of Congruent Triangles

By MrPilarski

YouTube presents Congruent Figures Part 2 - Proving Triangles Congruent - Definition of Congruent Triangles, an educational video resource on math.

Median of a Triangle | MathHelp.com

This lesson covers math ratios. Students learn that the ratio of one number to another is the result of the first number divided by the second number. Given various figures, students are then asked to determine ratios of side lengths or angle measures. Students are also given word problems involving ratios.

Median of a Triangle | MathHelp.com

By MathHelp.com

Find missing angles of triangles

By Khan Academy

Sal combines what we know about isosceles triangles and parallel lines with the power of algebra to solve the angles of an isosceles triangle.

Special right triangles

By Khan Academy

Introduction to 45-45-90 Triangles

Binomial Theorem & Pascal's Triangle

By Khan Academy

Binomial Theorem and Pascal's Triangle

Congruent triangles

By MathPlanetVideos

Find the values of x and y so that the triangles are congruent.

9.7 Special Right Triangles (Practice)

By AutenMath

9.7 Special Right Triangles (Practice)

Proving Triangles are Similar - YourTeacher.com - Geometry Help

By yourteachermathhelp

Students learn the following theorems related to similar triangles. If an angle of one triangle is congruent to an angle of another triangle, and the lengths of the sides that include each angle are in proportion, then the triangles are similar (Side-Angle-Side Similarity Theorem, or SAS Similarity Theorem). If the lengths of the sides of two triangles are in proportion, then the triangles are similar (Side-Side-Side Similarity Theorem, or SSS Similarity Theorem). Students are then asked to determine whether given triangles are similar based on these theorems.

45-45-90 triangles | Right triangles and trigonometry | Geometry | Khan Academy

By Khan Academy

Video uses an electronic black board with different colored pens. Introduction to 45-45-90 Triangles, these can also be called right triangles because of the 90 degree measurement. These triangles are special because if two angles of a triangle are equal the one side they don’t share is going to be equal. This then goes on to explain Pythagorean Theorem, Side A squared + Side B squared = Side C squared, side C is the hypotenuse or the side that is shared in a triangle. The narrator goes on to explain how to solve, using square roots. This video is for middle school students.