1. What rules do you know about triangles?
2. Write what you know about triangles.
Use some of these items in your answers
180 degrees obtuse complement
90 degrees less than 90 more than 90
three sides can 3 6 9 be a triangle? (those are the lengths of the sides of the triangle)
can 2 5 1 be a triangle?
What's the area of the triangle? What is special about 30-60-90? 45-45-90?
SOH CAH TOA
(not on the PSAT...)