Week 5 Warm Up 02.02.12 Add theorem 2.1 here next year.

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Presentation transcript:

Week 5 Warm Up 02.02.12 Add theorem 2.1 here next year.

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.

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.

Ex 1 similar not similar

Ex 2 ∠S ≅ ∠S because of SAS

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

Do 1: Find the height of the flagpole. Assignment: Textbook page 492, 6 - 29 all