Angles in Triangles

Angles in Triangles

8th Grade

15 Qs

quiz-placeholder

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Angles in Triangles

Angles in Triangles

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Easy

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the sum of the angle measures in a triangle?

90°

180°

360°

270°

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

If two angles of a triangle are 30° and 70°, what is the measure of the third angle?

60°

70°

80°

90°

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the definition of an obtuse angle?

An obtuse angle is an angle that measures more than 90° but less than 180°.

An obtuse angle is an angle that measures exactly 90°.

An obtuse angle is an angle that measures less than 90°.

An obtuse angle is an angle that measures more than 180°.

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which of the following sets do NOT make a triangle: 60, 60, 60; 55, 65, 45; 45, 90, 45; 75, 40, 65?

60, 60, 60

45, 90, 45

75, 40, 65

55, 65, 45

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the relationship between the angles in an isosceles triangle?

The angles opposite the equal sides are equal.

All angles are equal in an isosceles triangle.

The angles opposite the unequal sides are equal.

The sum of the angles is always 180 degrees.

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the formula to find the measure of an interior angle of a regular polygon?

(n-2) × 180° / n

(n+2) × 180° / n

(n-2) × 90° / n

(n-3) × 180° / n

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Find the measure of the missing angle if one angle is 60° and another is 90°. What is the missing angle?

30°

45°

60°

75°

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