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Geo 2.3 Triangle Sum & Exterior Angle Theorems

Geo 2.3 Triangle Sum & Exterior Angle Theorems

Assessment

Flashcard

Mathematics

9th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the Triangle Sum Theorem?

Back

The Triangle Sum Theorem states that the sum of the interior angles of a triangle is always 180 degrees.

2.

FLASHCARD QUESTION

Front

If angle A is 45 degrees and angle B is 55 degrees, what is angle C?

Back

Angle C = 180 - (Angle A + Angle B) = 180 - (45 + 55) = 80 degrees.

3.

FLASHCARD QUESTION

Front

Define an acute angle.

Back

An acute angle is an angle that measures less than 90 degrees.

4.

FLASHCARD QUESTION

Front

What is the Exterior Angle Theorem?

Back

The Exterior Angle Theorem states that the measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles.

5.

FLASHCARD QUESTION

Front

If angle D is an exterior angle and angles E and F are the non-adjacent interior angles, how do you express angle D?

Back

Angle D = Angle E + Angle F.

6.

FLASHCARD QUESTION

Front

Classify the triangle with angles measuring 30 degrees, 60 degrees, and 90 degrees.

Back

This triangle is classified as a right triangle.

7.

FLASHCARD QUESTION

Front

What is the measure of the third angle in a triangle if the other two angles are 70 degrees and 40 degrees?

Back

The third angle = 180 - (70 + 40) = 70 degrees.

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