10 terms

acute angle

an angle that measures less than 90 degrees

adjacent angles

Angles that have a common side and a common vertex (corner point).

angle bisector

a ray that divides an angle into two congruent angles

obtuse angle

an angle between 90 and 180 degrees

right angle

an angle that measures exactly 90 degrees

complementary angles

2 angles that add up to 90 degrees

supplementary angles

sum of angles that equals 180 degrees

straight angles

measures exactly 180 degrees and forms a straight line

linear pair

two adjacent angles whose opposite sides form a line

Vertical Angle

angles that are opposite eachother, share a vertex, and congruent