AnswersFL-1205070-MJ Grade 8 Pre-Algebra Summer 2026Solving for Unknown Angles in Triangles

Solving for Unknown Angles in Triangles Answers

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1
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Triangle VWT is an isosceles. Which equation can be used to find the measure of∠V?

A
2x = 52
B
x + x – 52 = 180
C
180 + 52 = x + x
D
180 = 2x + 52
2
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m∠B = 80✔ 84120112 °

A
80
B
✔ 84
C
120
D
112
3

m∠C = 85✔ 7582120 °

A
85
B
✔ 75
C
82
D
120
4

Megan constructed triangle ABC. In Megan’s triangle, m∠A is represented by x°, m∠B is 4 times greater than m∠A, and m∠C is 30° less than 5 times m∠A.Choose the statements that are true about the triangle Megan constructed. Select all that apply.

A
m∠A = x°
B
m∠A = (5x)°
C
m∠B = (4x)°
D
m∠C = (5x – 30)°
E
m∠A + m∠B + m∠C = 360°
5

Question text not available

Answers:
Selection 1:132 = x + (3x – 24)
°:39
6

m∠A = ✔ 21203630 °

Answers:
°:21
°:84
°:75
7

What is the value of x?

A
37
B
48
C
127
D
138
8

What equation can be used to find the value of x?

Answers:
Selection 1:132 = x + (3x – 24)
°:39
9

Given the diagram, which statement is not true?

A
m∠1 = (6x + 8)° because they are corresponding angles.
B
m∠1 = 74° because ∠1 is supplementary to the angle marked 106°.
C
m∠1 + (6x + 8)° + (7x – 2)° = 180° because they can form a straight line which measures 180°.
D
(7x – 2)° + m∠2 = 106° because the sum of the remote interior angles equals the exterior angle.
10

What is the measure of ∠B?m∠B= 18✔ 396378°

A
18
B
✔ 39
C
63
D
78

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