Angles and Triangles 10/27

Videos explaining triangle angles and explaining isosceles triangles: 

https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-congruence-theorems/v/proof-sum-of-measures-of-angles-in-a-triangle-are-180

 

https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-congruence-theorems/v/congruent-legs-and-base-angles-of-isosceles-triangles

Vertical Angles Explained: https://www.mathsisfun.com/definitions/vertical-angles.html#:~:text=The%20angles%20opposite%20each%20other,also%20called%20vertically%20opposite%20angles.

Video: https://www.youtube.com/watch?v=7vi9Kl_1Q3w