Answers27.3821055 ECSD Geometry Concepts and Connections CRUnit Test

Introduction to Transformations Answers

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1
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Which describes the transformation? Select three options.

A
It is rigid.
B
It is nonrigid.
C
It is isometric.
D
The size is preserved.
E
The angles are not preserved.
2
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A transformation of rectangle LMNO results in rectangle L'M'N'O'.

Question illustration
A
dilation
B
stretch
C
reflection
D
rotation
3

Triangle ABC is transformed to create triangle MNL.

Question illustration
A
The transformation is rigid because corresponding side lengths and angles are congruent.
B
The transformation is rigid because corresponding side lengths are congruent and corresponding angles are not congruent.
C
The transformation is nonrigid because the two triangles have different names.
D
The transformation is nonrigid because the three sides and the three angles in each triangle have different measures.
4

Consider the transformation.

Question illustration
A
It is isometric because the side lengths remained the same.
B
It is isometric because all angle measures remained the same.
C
It is not isometric because the side lengths did not remain the same.
D
It is not isometric because the angle measures did not remain the same.
5

A transformation of ΔSTV results in ΔUTV.

Question illustration
A
dilation
B
reflection
C
rotation
D
translation
6

Triangle 1 undergoes four different transformations. The results of these transformations are shown.

Question illustration
A
Triangle 1 is rotated to result in triangle 2.
B
Triangle 1 is dilated to result in triangle 3.
C
Triangle 1 is reflected to result in triangle 4.
D
Triangle 1 is stretched to result in triangle 5.
7

Triangle STV is transformed to create the image, triangle UTV.

Question illustration
A
Side length U T
Option A
B
Side length V U
Option B
C
Side length T S
Option C
D
Side length T V
Option D
8

2 parallelograms have identical side lengths and angle measures. The second parallelogram is a reflection of the first.

Question illustration
A
The transformation is a stretch.
B
The transformation is a reflection.
C
The transformation is a rotation.
D
The transformation is a translation.
9

Triangle XYZ is transformed to create triangle X'Y'Z'. The side lengths of both triangles are shown. = 10 cm = 10 cm = 9 cm = 9 cm = 4 cm = 4 cm

Question illustration
A
Yes, the pre-image and image have the same side length measures.
B
Yes, all transformations are rigid.
C
No, the side lengths of triangle XYZ are different from each other.
D
No, each side length of X'Y'Z' should be one half of the corresponding side length of XYZ.
10

2 quadrilaterals have identical side lengths and angles measures. The second quadrilateral is rotated 90 degrees to the left.

Question illustration
A
dilation
B
reflection
C
rotation
D
translation

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