Triangle Angle Sum Theorem

Triangle Angle Sum Theorem

Assessment

Flashcard

Mathematics

9th - 12th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the Triangle Angle Sum Theorem?

Back

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

2.

FLASHCARD QUESTION

Front

If one angle of a triangle is 45 degrees and another is 90 degrees, what is the measure of the third angle?

Back

The third angle measures 45 degrees, since 180 - (45 + 90) = 45.

3.

FLASHCARD QUESTION

Front

What type of angle measures exactly 90 degrees?

Back

A right angle.

4.

FLASHCARD QUESTION

Front

If two angles in a triangle measure 62 degrees and 56 degrees, what is the measure of the third angle?

Back

The third angle measures 62 degrees, since 180 - (62 + 56) = 62.

5.

FLASHCARD QUESTION

Front

What is the measure of an angle that is complementary to a 47 degree angle?

Back

The complementary angle measures 43 degrees, since 90 - 47 = 43.

6.

FLASHCARD QUESTION

Front

What is the measure of an angle that is supplementary to a 50 degree angle?

Back

The supplementary angle measures 130 degrees, since 180 - 50 = 130.

7.

FLASHCARD QUESTION

Front

In a triangle, if one angle is obtuse, what can be said about the other two angles?

Back

The other two angles must be acute, as the sum of all angles in a triangle is 180 degrees.

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