*videos with an are Khan Academy videos*

**GEOMETRY**

**ANGLES**

Angles in a triangle sum to 180° proof (vid)*

Practice: Find angles in triangles

Isosceles & equilateral triangles problems (vid)*

Practice: Find angles in isosceles triangles

Triangle exterior angle example(vid)*

Worked example: Triangle angles (intersecting lines)(vid)*

Worked example : Triangle Angles (diagram)(vid)*

Practice: Find angle measure using triangles

**PYTHAGOREAN THEOREM**

Intro to Pythagorean Theorem (vid)*

Practice: Find right triangle sides

Practice: Find isosceles triangle side lengths

Practice: Find right triangle side lengths

Pythagorean Theorem Example(vid)*

Pythagorean Theorem with Isosceles Triangles(vid)*

Practice: Using the Area of a Square to Visualize Pythagorean Theorem

Use Pythagorean theorem to find area of an isosceles triangle (vid)*

Practice: Use Pythagorean Theorem to find perimeter

Practice: Use Pythagorean Theorem to find area

Pythagorean theorem word problem: carpet(vid)*

Pythagorean theorem word problem: fishing boat(vid)*

Pythagorean theorem in 3D(vid)*

Practice: using the Pythagorean Theorem in 3D

**DISTANCE FORMULA**

Distance Formula(vid)*