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Basic Properties of Triangles

Elementary Math
Elementary Math – Advanced
Elementary Science
Pre Algebra
Algebra 1
Stories
American History

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Elementary Math
Elementary Math – Advanced
Elementary Science
Pre Algebra
Algebra 1
Stories
American History

Basic Properties of Triangles

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Classification of Triangles 5 Lessons

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Unit Content

0% Complete 0/5 Steps

Define parts of a triangle

Classify triangles by sides

Classify triangles by angles

Summary of types of triangles

Practice – Name the triangles

Exterior Angle Property of Triangles-Exterior angle is equal to sum of the remote interior angles 3 Lessons

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What is the exterior angle property of triangles

Proof of the exterior angle property of triangles

Practice – Use the exterior angle property to solve a few geometric problems

Interior Angle Property of Triangles-Sum of Interior angles is 180 degree 4 Lessons

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What is the interior angle property of triangles

Proof 1 – the interior angle property of triangles

Proof 2 – the interior angle property of triangles

Practice – Solve geometric problems using triangle properties

Property of Sides of Triangles-Sum of 2 sides must be greater than the third side 2 Lessons

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What is the property of sides of triangles

Practice – Solve geometric problems using triangle side property

Special Triangles 2 Lessons

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Every angle is 60 degree in an equilateral trianlge

Base angles are congruent in an isosceles triangle

Pythagorean Theorem 5 Lessons

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Unit Content

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What is Pythagorean Theorem?

Example – How to use Pythagorean theorem

Practice 1 – Use Pythagorean theorem to solve geometric problems

Practice 2 – Use Pythagorean theorem to solve geometric problems

Practice 3 – Use Pythagorean theorem to solve geometric problems

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