Similarity: Missing Side

Presentation

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Mathematics

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9th - 10th Grade

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Practice Problem

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Medium

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CCSS

8.G.A.2, HSG.CO.B.6

Standards-aligned

Zinaida Avdic

Used 33+ times

FREE Resource

7 Slides • 3 Questions

Similarity

I can find the scale factors and use them to solve for missing sides.

Multiple Choice

What is ratio of any two corresponding sides?

Scale Factor

Corresponding Sides

Similar Figures

Multiple Choice

If two figures are similar, the corresponding sides are ______________.

equal

congruent

proportional

none of these

Multiple Choice

All angles in similar figures are congruent.

True

False

Corresponding Sides and Angles

Matching sides of two or more polygons are called corresponding sides, and matching angles are called corresponding angles.
If two figures are similar, then the measures of the corresponding angles are equal and the ratios of the lengths of the corresponding sides are proportional.

Similar Figures

Two figures that have the same shape are said to be similar.
When two figures are similar, the ratios of the lengths of their corresponding sides are equal.
To determine if the triangles below are similar, compare their corresponding sides.

Watch the video (copy the link and open it in a new window)

https://www.youtube.com/watch?v=MqI45r7PjuY

Are the two figures shown similar?

Similar Triangles (missing side)

Practice time:

https://quizlet.com/_8wfynz?x=1qqt&i=2zyv98

You should review flash cards. Suggestion: Complete all problems on the paper.

Similarity Quiz

Go to Google Classroom, open Week 9 Assignments and you will find Quizizz link there. Complete the game to get a credit. Retake it as many times as you need to get at least 70%.

Similarity

I can find the scale factors and use them to solve for missing sides.

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