Angle Relationships

1
Angle Relationships

• Section 1-5

2
Adjacent angles

• Angles in the same plane that have a common
  vertex and a common side, but no common interior
  points.

1
2
3
Vertical angles

• two nonadjacent angles formed by two intersecting
  lines
• Vertical angles are congruent.

4
3
4
Linear pair

• adjacent angles whose noncommon sides are
  opposite rays
• The sum of the measures of the angles in a linear
  pair is 180.

5
6
5
Perpendicular lines

• special intersecting lines that form right angles
• Perpendicular lines intersect to form 4 right
  angles.

6

• Supplementary angles 2 angles whose measures
  have a sum of 180
• Complementary angles 2 angles whose measures
  have a sum of 90