AnswersLearning Curve Geometry A-26Unit Test

Introduction to Transformations Answers

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1
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Which transformations are nonrigid transformations? Select two options.

A
dilation
B
reflection
C
rotation
D
stretch
E
translation
2
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A transformation is shown in the diagram.

Question illustration
A
Quadrilateral DEFG is translated to form quadrilateral D'E'F'G'.
B
Quadrilateral DEFG is rotated to form quadrilateral D'E'F'G'.
C
Quadrilateral DEFG is reflected to form quadrilateral D'E'F'G'.
D
Quadrilateral DEFG is dilated to form quadrilateral D'E'F'G'.
3

A transformation of ΔSTV results in ΔUTV.

Question illustration
A
dilation
B
reflection
C
rotation
D
translation
4

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.
5

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
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

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.
8

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.
9

2 trapezoids have identical angle measures but different side lengths. Trapezoid 1 has side lengths 4, 2, 6, 2. Trapezoid 2 has side lengths 8, 4, 12, 4.

Question illustration
A
It is a dilation because the transformation is isometric.
B
It is a dilation because the transformation is not isometric.
C
It is a stretch because the transformation is isometric.
D
It is a stretch because the transformation is not isometric.
10

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

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