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Exploring Angle Sum and Exterior Angles in Triangles

Exploring Angle Sum and Exterior Angles in Triangles

Assessment

Interactive Video

Mathematics

6th - 10th Grade

Practice Problem

Hard

CCSS
8.G.A.5

Standards-aligned

Created by

Jackson Turner

FREE Resource

Standards-aligned

CCSS.8.G.A.5
The video tutorial covers the angle sum and exterior angles of triangles. It explains that the sum of the interior angles of a triangle is always 180 degrees. The tutorial provides examples of finding missing interior angles by subtracting the sum of known angles from 180 degrees. It also discusses exterior angles, explaining that they are supplementary to the adjacent interior angle, and provides examples of calculating exterior angles using this property. The video concludes with practice problems for students to solve.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the sum of the interior angles of a triangle?

270 degrees

90 degrees

180 degrees

360 degrees

Tags

CCSS.8.G.A.5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a triangle has two angles measuring 100 degrees and 30 degrees, what is the measure of the third angle?

50 degrees

60 degrees

70 degrees

80 degrees

Tags

CCSS.8.G.A.5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a triangle with a right angle and an exterior angle of 140 degrees, what is the measure of the missing interior angle?

60 degrees

40 degrees

30 degrees

50 degrees

Tags

CCSS.8.G.A.5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a triangle has a right angle and one of the other angles is 40 degrees, what is the measure of the third angle?

40 degrees

30 degrees

60 degrees

50 degrees

Tags

CCSS.8.G.A.5

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the measure of an exterior angle if the two opposite interior angles are 82 degrees and 42 degrees?

124 degrees

126 degrees

120 degrees

128 degrees

Tags

CCSS.8.G.A.5

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the exterior angle of a triangle is 124 degrees, what is the measure of the opposite interior angle?

60 degrees

58 degrees

56 degrees

62 degrees

Tags

CCSS.8.G.A.5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the sum of the interior angles of a triangle?

270 degrees

360 degrees

180 degrees

90 degrees

Tags

CCSS.8.G.A.5

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