Central Angles Answers

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1
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The perimeter of a square is 56 cm. What is the approximate length of its diagonal?

A
10.6 cm
B
14.0 cm
C
15.0 cm
D
19.8 cm
2
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Figure CDEF is a parallelogram.

Question illustration
A
2
B
3
C
4
D
5
3

Parallelogram W X Y Z is shown. Diagonals are drawn from point W to point Y and from point Z to point X and intersect at point C. The length of W C is (x + 4) feet and the length of C Y is (2 x minus 7) feet.

Question illustration
A
11 ft
B
15 ft
C
21 ft
D
23 ft
4

Rhombus LMNO is shown with its diagonals.

Question illustration
A
34°
B
45°
C
56°
D
68°
5

Quadrilateral A B D C is shown.

Question illustration
A
AB ≅ CD
B
AC ≅ BD
C
AB ⊥ BD
D
CD ⊥ BD
6

Figure ABCD is a parallelogram.

Question illustration
A
6
B
7
C
8
D
9
7

In the parallelogram shown, AE = t + 2, CE = 3t − 14, and DE = 2t + 8.

Question illustration
A
20 units
B
24 units
C
48 units
D
68 units
8

Parallelogram R S T U is shown. Angle S is 70 degrees.

Question illustration
A
m∠R = 70°, m∠T = 110°, m∠U = 110°
B
m∠R = 110°, m∠T = 110°, m∠U = 70°
C
m∠R = 110°, m∠T = 70°, m∠U = 110°
D
m∠R = 70°, m∠T = 110°, m∠U = 70°
9

In parallelogram LMNO, MP = 21 m, LP = (y + 3) m, NP = (3y – 1) m, andOP = (2x – 1) m.

Question illustration
A
x = 10 m, y = 1 m
B
x = 10 m, y = 2 m
C
x = 11 m, y = 1 m
D
x = 11 m, y = 2 m
10

ABCD is a square.

Question illustration
A
30°
B
45°
C
60°
D
90°
11

A partial proof was constructed given that MNOP is a parallelogram. By the definition of a parallelogram,MN ∥ PO and MP ∥ NO.Using MP as a transversal, ∠M and ∠P are same-side interior angles, so they are supplementary.Using NO as a transversal, ∠N and ∠O are same-side interior angles, so they are supplementary.Using OP as a transversal, ∠O and ∠P are same-side interior angles, so they are supplementary.Therefore, __________________ because they are supplements of the same angle.

Question illustration
A
∠M is supplementary to ∠O
B
∠N is supplementary to ∠P
C
∠M ≅ ∠P
D
∠N ≅ ∠P
12

EFGH is a rhombus.

Question illustration
A
6 units
B
8 units
C
10 units
D
14 units
13

Parallelogram R S T U is shown. Diagonals are drawn from point R to point T and from point U to point S and intersect at point V. The length of line segment U V is (x + 3) meters and the length of line segment V S is (2 x minus 7) meters.

Question illustration
A
10 m
B
13 m
C
23 m
D
26 m
14

Parallelogram A B C D is shown. The length of A B is (8 x minus 5) inches and the length of D C is (3 x + 10) inches.

Question illustration
A
3 in.
B
4 in.
C
8 in.
D
19 in.
15

The figure shown is a rhombus.

Question illustration
A
x + y = z
B
2x = y + z
C
z + x = 2y
D
2x + 2y = 4z
16

Figure ABCD is a parallelogram.

Question illustration
A
∠B = 55°; ∠D = 55°
B
∠B = 55°; ∠D = 125°
C
∠B = 97°; ∠D = 97°
D
∠B = 83°; ∠D = 97°
17

Parallelogram W X Y Z is shown. The length of W X is (2 x + 9) millimeters and the length of W X is (x minus 5) millimeters.

Question illustration
A
2 mm
B
7 mm
C
23 mm
D
25 mm
18

A square stained glass window is divided into four congruent triangular sections by iron edging to represent the seasons of the year. Each diagonal of the square window measures 9 inches.

Question illustration
A
43.5 inches
B
50.9 inches
C
54.0 inches
D
61.5 inches
19

Rectangle PQRS is shown with its diagonals, PR and QS.

Question illustration
A
right triangle
B
equilateral triangle
C
isosceles triangle
D
scalene triangle
20

Parallelogram P Q S R is shown. The length of P Q is (4 x minus 1) centimeters and the length of R S is (3 x + 7) centimeters.

Question illustration
A
4 cm
B
6 cm
C
8 cm
D
12 cm

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