Grades

Kindergarten

1st

2nd

3rd

4th

5th

6th

7th

8th

9th

10th

11th

12th

Higher Ed

Adult Ed

Other

Subjects

ELA

Math

Science

Social Studies

Art

Computer Science

French

German

Music

Physical Education

Spanish

Other

Private Library

Team Premium

*check*Rating- Date

Geometry 10-4 Perimeters of Areas of Similar Figures

| 24 Questions

Note from the author:

A complete formative lesson with embedded slideshow, mini lecture screencasts, checks for understanding, practice items, mixed review, and reflection. I create these assignments to supplement each lesson of Pearson's Common Core Edition Algebra 1, Algebra 2, and Geometry courses. See also mathquest.net and twitter.com/mathquestEDU.

zoom in

1

10 pts

Solve It! Complete the tables on the canvas using the text tool.

2

10 pts

Solve It! How do the ratios of the perimeters and the ratios of the areas compare with the scale factors?

zoom in

3

10 pts

Problem 1 Got It?

A

B

C

D

zoom in

4

10 pts

Problem 1 Got It?

A

B

C

D

zoom in

5

10 pts

Problem 2 Got It?

A

B

C

D

6

10 pts

Problem 3 Got It? The scale factor of the dimensions of two small pieces of window glass is 3 : 5. The smaller piece costs $2.50. How much should the larger piece cost?

Enter your answer in this format: $2.71

zoom in

7

10 pts

Problem 3 Got It? Reasoning: In Problem 3, why is it important that each dimension is 2.5 times the corresponding dimension of the original plot? Explain.

zoom in

8

10 pts

Problem 4 Got It?

A

B

C

D

zoom in

9

10 pts

A

B

C

D

zoom in

10

10 pts

A

B

C

D

zoom in

11

10 pts

A

B

C

D

zoom in

12

10 pts

A

B

C

D

14

10 pts

Reasoning: The area of one rectangle is twice the area of a similar rectangle. What is the ratio of their perimeters? How do you know?

15

10 pts

Error Analysis: Your friend says that since the ratio of the perimeters of two polygons is ½, the area of the smaller polygon must be one half the area of the larger polygon. What is wrong with this statement? Explain.

16

10 pts

Compare and Contrast: How is the relationship between the areas of two congruent figures different from the relationship between the areas of two similar figures?

17

10 pts

Review Lesson 10-3: Match each regular polygon with its area.

- a square with apothem 11Answer by dragging items here
- a regular pentagon with apothem 13.8 and side length 20Answer by dragging items here
- an octagon with apothem 12 and side length 10Answer by dragging items here

zoom in

18

10 pts

Review Lesson 10-3: Fill in the blank. Enter only a number. The area of the regular polygon is __?__ square inches.

20

10 pts

Vocabulary Review: Categorize each statement based on whether it is always, sometimes, or never true.

- AlwaysAnswer by dragging items here
- SometimesAnswer by dragging items here
- NeverAnswer by dragging items here

21

10 pts

Vocabulary Review: Identify the pairs of similar figures. Select all that apply.

zoom in

22

10 pts

Use Your Vocabulary: Which segment is NOT a radius of regular pentagon ABCDE?

23

10 pts

Use Your Vocabulary: Complete each sentence with are or are not.

- The radii of a regular polygon __?__ congruent.Answer by dragging items here
- The triangles formed by the radii and sides of regular pentagon ABCD __?__ congruent.Answer by dragging items here

24

10 pts

Reflection: Math Success

Add to my formatives list