NC.8.G.5 Exam Prep

In an isosceles triangle, one of the base angles measures 70^o. What is the measure of the largest exterior angle?

• 40°

• 70°

• 110°

• 140°

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NC.8.G.5

An exterior angle of a triangle is 155°. If one of the non-adjacent interior angles is 70°, what is the measure of x?

• 25°

• 75°

• 85°

• 95°

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NC.8.G.5

The measures of the angles in a triangle are 50°, 55°, and (x + 20)°. What is the value of x?

(a)  

• 55°
• 75°

• 90°

• 100°

If ∠1 measures 55^o, which other angles measure 55^o?​ ​ (a)   ​ (b)   ​ (c)  

• ∠3
• ∠5
• ∠7
• ∠2
• ∠4
• ∠6
• ∠8

An exterior angle of a triangle is 100°. If the two non-adjacent interior angles are (x + 10)° and (2x)°, what is the value of x?

Lines a and b are parallel. What is the value of x?

• 10

• 12

• 15

• 20

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NC.8.G.5

Lines a and b are parallel. What is the measure of ∠S?

(Image is not drawn to scale!)

• 90°

• 105°

• 115°

• 125°

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NC.8.G.5

Lines a and b are parallel. What is the value of x?

Mathematical Equivalence

ON

What is the measure of ∠x?

• 55°

• 65°

• 80°

• 100°

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NC.8.G.5

What is the measure of ∠FGH?

• 60°

• 70°

• 80°

• 90°

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NC.8.G.5