Bellwork Determine whether the two triangles are similar

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Presentation transcript:

Bellwork Determine whether the two triangles are similar Triangle ABC: , Triangle DEF: , 2) Triangle ABC: , 3) Solve

Prove Triangles Similar by SSS and SAS Lesson 6.5 Prove Triangles Similar by SSS and SAS

Objective Use the SSS and SAS similarity Theorems

Standard 4.0 – Students prove basic theorems involving congruence and similarity. 5.0 – Students prove that triangles are congruent or similar, and they are able to use the concept of corresponding parts of congruent triangles

Academic Language Ratio Proportion Similar Polygons

Write a paragraph! What is similarity? How can you show it? What happens if you don’t know the angles of two triangles you are trying to prove?

Triangles with no known angles? Use below theorem to prove similar

Practice

Practice

But wait, there’s more….

Write it down 5 triangles congruency postulates and theorems 3 triangles similarity postulates and theorems Don’t get them confused!!! Practice with flashcards

It’s camping season

Practice

Homework p.391 #1, 2, 3, 5, 7, 9, 11, 28