1. Week 5
Warm Up
Add theorem 2.1 here next year.

2. I will prove triangles are similar.
Section 8.5 Day 1
I will prove triangles are similar.
Theorem 8.2
Side – Side – Side ( SSS )
If the lengths of the corresponding sides of two triangles are proportional, then the triangles are similar.

3. Side – Angle – Side ( SAS )
Theorem 8.3
Side – Angle – Side ( SAS )
If an angle of one triangle is congruent to an angle of a second triangle and the lengths of the sides including these angles are proportional, then the triangles are similar.

4. Ex 1
similar
not similar

5. Ex 2
∠S ≅ ∠S
because of SAS

6. Find the height of the wall ( DE ).
Ex 3
5( 85 ) = ( 6.5 )DE

7. Do 1:
Find the height of the flagpole.
Assignment:
Textbook page 492, all