Answers25-26 CRX Math Models with Applications 7052AQuadratic Regression Models

Symmetries in Shapes Answers

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1
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Consider the reflectional symmetry of the regular pentagon.

Question illustration
A
1
B
1
C
3
D
3
E
5
F
5
G
6
H
6
2
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A regular polygon first maps directly onto itself after rotating 20 degrees. How many sides does the polygon have?

A
5
B
9
C
12
D
18
3

Consider the rotational symmetry of equilateral triangle ABC.

Question illustration
A
1
B
1
C
2
D
2
E
3
F
3
G
4
H
4
4

Analyze the reflectional symmetry of the letters.

Question illustration
A
A and Y
B
R and N
C
I and Y
D
A and N
5

Analyze the reflectional symmetry of the letters.

Question illustration
A
S and H
B
R and K
C
S and K
D
H and A
6

A regular polygon first maps directly onto itself after rotating 120 degrees. How many sides does the polygon have?

A
1
B
2
C
3
D
4
7

Consider the letters of the word.

Question illustration
A
A
B
C
C
T
D
N
8

Consider the rotational symmetry of equilateral triangle ABC.

Question illustration
A
30°
B
60°
C
120°
D
380°
9

Consider the symmetry of the "no” symbol.

Question illustration
A
1-fold
B
1-fold
C
2-fold
D
2-fold
E
3-fold
F
3-fold
G
4-fold
H
4-fold
10

Analyze the reflectional symmetry of the polygons labeled A, B, C, and D. Which polygons have fewer than two lines of symmetry?

Question illustration
A
A and B
B
B and C
C
A and C
D
C and D
11

Which diagram represents a line of symmetry for the seven-point star?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
12

For which shape is 180 degrees the smallest angle of rotational symmetry?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
13

Analyze the reflectional symmetry of the image.

Question illustration
A
0
B
1
C
2
D
4
14

For which shape is 45 degrees the smallest angle of rotational symmetry?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
15

Consider the rotational symmetry of regular hexagon ABCDEF.

Question illustration
A
1
B
3
C
6
D
8
16

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0
1
1
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