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Understanding Dilations in Geometry

Understanding Dilations in Geometry

Assessment

Interactive Video

Mathematics

6th - 7th Grade

Hard

Created by

Jennifer Brown

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary effect of a dilation on a geometric shape?

It reflects the shape.

It rotates the shape.

It alters the shape's size.

It changes the shape's angles.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a triangle's side lengths are multiplied by a scale factor of 2, what happens to the triangle?

The triangle's area is halved.

The triangle's perimeter remains the same.

The triangle becomes larger.

The triangle becomes smaller.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following remains unchanged after a dilation?

The shape's area

The shape's side lengths

The shape's perimeter

The shape's angle values

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In Example 1, what is the scale factor if a triangle's side length changes from 3 units to 1 unit?

1/3

3

1/2

1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in finding the scale factor of a dilation?

Add the lengths of the original and new shapes.

Divide the new length by the original length.

Multiply the original length by the new length.

Subtract the original length from the new length.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In Example 2, what is the scale factor used for the dilation about point M?

3

1

1/2

2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When dilating a point about a point other than the origin, what must be considered?

The distance from the dilation point

The reflection line

The distance from the origin

The angle of rotation

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