## Ms. Mari

### Target 1​

###### Lesson Type:

Continuation

Geometry

:

Congruence

Identify similar triangles.

###### 1:

Prove that triangles are similar using SSS (Side-Side-Side), AA (Angle-Angle), and SAS (Side-Angle-Side).

###### 2:

Explain that triangles are similar if all corresponding angles are equal and all corresponding sides have the same ratio or proportion.

###### 3:

Find the ratio of corresponding sides and use that ratio to find unknown lengths.

6th

###### Vocabulary:

SIMILAR TRIANGLES, ANGLE-ANGLE THEOREM, SIDE-SIDE-SIDE THEOREM, RATIO, PROPORTION, CORRESPONDING ANGLES AND SIDES, CROSS-PRODUCTS

Activities:

- Reviewed characteristics of similar triangles and Angle-Angle Theorem

- Used cut out triangles from last time to examine the ratio of corresponding side lengths.

- Whiteboard exercise: Filled in the missing number given a proportion.

- Found cross-products, observed that they are equal in proportions.    ### Home Exploration

###### Challenge Answer: ### Target 2

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###### Vocabulary:

Activities:    ### Home Exploration

###### Challenge Answer: ### Target 3

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###### Vocabulary:

Activities:    ### Home Exploration 