4.2 Angles of a Triangle Flashcards

0
Q

Triangle Sum Theorem

A

The sum of the measures of the interior angles of a triangle is 180 degrees

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1
Q

Interior Angle

A

1 of the 3 original angles in a triangle

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2
Q

Third Angles Theorem

A

If 2 angles of 1 triangle are congruent to 2 angles of a 2nd triangle, then the 3rd angles are also congruent

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3
Q

The acute angles of a right angle are…

A

Complementary

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4
Q

Exterior Angles Theorem

A

The measure of an exterior angle of a triangle is equal to the sum of the measures of the 2 remote interior angles

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5
Q

Exterior Angle

A

Angles that are adjacent to and form a liner pair with interior angles of a triangle

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