Triangle Angles and Exterior Angles

Triangle Angles and Exterior Angles

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial guides viewers through solving a problem involving finding unknown angles in a triangle. It begins with setting up an equation based on the sum of angles in a triangle, then solves for the variable X. The tutorial proceeds to calculate each angle in the triangle and determines the exterior angle using the interior angles. The video concludes with a recap of the steps and key concepts, emphasizing the sum of angles in a triangle and the relationship between exterior and remote interior angles.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the sum of the angles in any triangle?

90 degrees

180 degrees

360 degrees

270 degrees

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in solving for the unknown angles in the triangle?

Use a protractor

Guess the angles

Measure the angles directly

Write an equation based on the sum of angles

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you solve the equation 8x = 168?

Multiply both sides by 8

Subtract 8 from both sides

Add 8 to both sides

Divide both sides by 8

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If X is 21, what is the value of the angle 5X - 3?

100 degrees

105 degrees

102 degrees

98 degrees

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of the angle 2X + 4 when X is 21?

46 degrees

44 degrees

42 degrees

50 degrees

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of the angle X + 11 when X is 21?

36 degrees

34 degrees

32 degrees

30 degrees

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you find the exterior angle Y?

Subtract the smallest interior angle from 180

Add the two remote interior angles

Subtract the largest interior angle from 180

Add all interior angles

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