AnswersSRC 2022 MJ Grade 8 Pre-Algebra Q1Congruence and Transformations

Congruence and Transformations Answers

11 verified answers2 views
1
Free Preview

According to the notation, which kind of dilation does this represent?

A
reduction
B
enlargement
C
congruence
D
This is not a dilation.
7

The diagram shows a dilation of segment AB. Which statements are true about the dilation? Select all that apply.

A
The dilation is an enlargement.
B
The dilation is a reduction.
C
Point O is the center of dilation.
D
The scale factor is 3.
E
The scale factor is 9.
8

Which statements are accurate about the dilation? Check all that apply.

A
The dilation is a reduction.
B
The scale factor is between 0 and 1.
C
A is the image of A'
D
Point O is the center of dilation.
E
OB = BB'
9

Explain whether this dilation is an enlargement or a reduction, and how you know.

Answer:

The dilation is an enlargement. I know this because the image, triangle A'B'C', is larger than the pre-image, triangle ABC.

10

In rectangle ABCD, AB = 10 cm and BC = 14 cm. If rectangle EFGH is the image after a dilation, which could be its side lengths?

A
EF = 6 cm and FG = 10 cm
B
EF = 7 cm and FG = 3 cm
C
EF = 15 cm and FG = 20 cm
D
EF = 25 cm and FG = 35 cm
11

Check all that you included in your response.

A
The dilation is an enlargement.
B
Triangle A’B’C’ is larger and is the image.
C
Triangle ABC is smaller and is the pre-image.

Did you find these answers helpful?

Congruence and Transformations Answers — SRC…