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Scale Factors and Angle Relationships

Scale Factors and Angle Relationships

Assessment

Interactive Video

Mathematics

8th Grade

Practice Problem

Hard

Created by

Thomas White

FREE Resource

The video tutorial covers scaling and projecting in geometry, focusing on rectangles and polygons. It explains how to determine if one rectangle is a scaled copy of another using various methods, including drawing and mathematical calculations. The tutorial also explores scale factors, compares different rectangles, and discusses polygon scaling. Additionally, it addresses triangle angle measures and finding angles in parallel lines.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following dimensions could be a scaled copy of a rectangle measuring 12 cm by 3 cm?

6 cm by 1.5 cm

10 cm by 2 cm

13 cm by 4 cm

15 cm by 5 cm

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the scale factor if rectangle A (12 cm by 8 cm) is a scaled copy of rectangle B (15 cm by 10 cm)?

2/3

3/2

5/4

4/5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If rectangle B is a scaled copy of rectangle A, what is the scale factor from A to B?

2

4/5

1/2

5/4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you know that rectangle C is not a scaled copy of rectangle B?

C's dimensions are both double B's dimensions

C's width is not double B's width

C's length is not double B's length

C's dimensions are half of B's dimensions

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What should be the scale factor to draw a scaled copy of a polygon with half the dimensions?

1/2

2

1/4

3/4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a polygon is scaled by a factor of 2, what happens to its dimensions?

They remain the same

They are halved

They are tripled

They are doubled

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which set of angles can form a triangle?

60°, 60°, 60°

90°, 45°, 45°

50°, 60°, 70°

100°, 40°, 50°

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