Angle Relationships
By: Marlena Auch and Haley Dougherty
Complementary, Supplementary, and Adjacent Angles
Complementary Angle- two angles whose degrees equal 90° when added together
Supplementary Angle- two angles whose degrees equal 180° when added together
Adjacent Angle- angles that share one common side
Right and Acute Angles
Obtuse and Straight Angles
Supplementary and Adjacent Angles
Right, Acute, Obtuse, and Straight Angles
Right Angle- an internal angle which is equal to 90°
Acute Angle- an angle smaller than 90°
Obtuse Angle- an angle greater than 90°
Straight Angle- angle is exactly 180°
Linear Pair and Vertical Angles
Linear Pair- a pair of adjacent angles with non-common sides that are opposite rays
Vertical Angles- are two non-adjacent angles formed by two congruent intersecting lines
Are supplementary angles and a linear pair always the same?
Yes, they are always the same. The supplementary angle and linear pair equal 180° and they both share common sides.