Question 1

Two angles that add up to exactly 90 degrees

Accepted Answer

complementary angles

Question 2

Two angles that add up to exactly 180 degrees

Accepted Answer

supplementary angles

Question 3

A pair of opposite congruent angles formed by intersecting lines

Accepted Answer

vertical angles

Question 4

Angles with exactly the same measure

Accepted Answer

congruent angles

Question 5

A triangle with at least two congruent sides

Accepted Answer

isosceles triangle

Question 6

A triangle with three congruent sides

Accepted Answer

equilateral triangle

Question 7

A triangle with no congruent sides

Accepted Answer

scalene triangle

Question 8

A triangle with 3 congruent angles

Accepted Answer

equiangular triangle

Question 9

A triangle with one angle that is greater than 90 degrees.

Accepted Answer

obtuse triangle

Question 10

A triangle that has a 90 degree angle.

Accepted Answer

right triangle

Question 11

A triangle that contains only angles that are less than 90 degrees.

Accepted Answer

acute triangle

Question 12

An angle that measures exactly 180 degrees

Accepted Answer

straight angle

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