https://docs.google.com/document/d/1Go-VzDB7DqH7ZqDqbbHk2BT0Ys4BKVVEu4R8JXRwuk4/edit?usp=sharing
https://docs.google.com/document/d/11BFxuAsRLaOiNZzKhO3i-_IR_qcBVK4sHVw5dRec774/edit?usp=sharing
Geometry Lab: Measuring Heights Using Mirrors
Geometry: Unit 5 Lesson 4 Intro through Example 2