Solving Missing Angles in Triangles and Quadrilaterals

Solving Missing Angles in Triangles and Quadrilaterals

Assessment

Interactive Video

Mathematics

6th - 10th Grade

Hard

Created by

Sophia Harris

FREE Resource

The video tutorial covers finding missing angle measures in triangles and quadrilaterals. It begins with an introduction to the concept that the sum of angles in a triangle is 180 degrees, followed by examples demonstrating how to calculate a missing angle by subtracting the sum of known angles from 180. The tutorial then transitions to quadrilaterals, explaining that their angles sum to 360 degrees, and provides examples of calculating missing angles using similar subtraction methods. The video emphasizes understanding the process and encourages note-taking for future reference.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a triangle has angles of 26 degrees and 83 degrees, what is the measure of the third angle?

74 degrees

73 degrees

72 degrees

71 degrees

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the sum of the angles in any triangle?

90 degrees

180 degrees

270 degrees

360 degrees

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a triangle with angles of 43 degrees and 79 degrees, what is the measure of the missing angle?

61 degrees

60 degrees

59 degrees

58 degrees

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in finding a missing angle in a triangle?

Subtract the given angles from 360

Add the given angles together

Divide the given angles by 2

Multiply the given angles

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a triangle has angles of 87 degrees and 39 degrees, what is the measure of the third angle?

56 degrees

57 degrees

55 degrees

54 degrees

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the sum of the angles in any quadrilateral?

180 degrees

270 degrees

360 degrees

450 degrees

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a quadrilateral with angles of 89 degrees, 75 degrees, and 79 degrees, what is the measure of the missing angle?

120 degrees

119 degrees

118 degrees

117 degrees

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