Area of a Circle — Unit test Answers

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4

Kasia wants to create a triangle with angles measuring , , and . She says that only one unique triangle is possible given these angle measures. Which statement about Kasia’s claim is true?

Question illustration
A
Kasia is incorrect. Since the angles sum to and no side lengths are given, multiple triangles can be drawn with these angle measures.
Option A
B
Kasia is incorrect. No triangle can be made with these angle measures because they do not sum to .
Option B
C
Kasia is correct. Since the angles sum to and no measurements are given, only one unique triangle is possible.
Option C
D
Kasia is correct. Since the angles do not sum to , only one unique triangle is possible.
Option D
5

Which name accurately describes the figure shown below and why?

Question illustration
A
trapezoid, because it has four sides of equal length and opposite sides that are parallel
B
trapezoid, because it has four sides of equal length and four right angles
C
rhombus, because it has four sides of equal length and opposite sides that are parallel
D
rhombus, because it has four sides of equal length and four right angles
8

What is the value of k in the linear pair below?

Question illustration
A
14 degrees
Option A
B
76 degrees
Option B
C
104 degrees
Option C
D
180 degrees
Option D
9

Which statement is true about two angles that are complementary?

A
The angles share a common ray.
B
The sum of the measures of the two angles is 90°.
C
The angles are opposite each other.
D
The sum of the measures of the two angles is 180°.
12

What is the value of x in the diagram?

Question illustration
A
52 degrees
Option A
B
64 degrees
Option B
C
128 degrees
Option C
D
138 degrees
Option D
15

If is 155°, what is ?

Question illustration
A
25°
B
35°
C
155°
D
180°

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