1. Exploring Angles and Angle Relationships
Chapter 1.6 & 1.7

2. An angle is formed by two rays.C B
The vertex is the common endpoint.
B is the vertex.

3. Vocabulary:
Acute angles- angles less than 90°.
Obtuse angles- angles greater than 90°.
Right angles- angles that equal 90°.
Straight angles- angles that equal 180°.

5. Vocabulary:
Perpendicular lines- special intersecting lines that form a right angle.
Adjacent angles- angles in a plane that have a common vertex and a common side, but no common interior parts.
Vertical angles- two nonadjacent angles formed by two intersecting lines. Vertical angles are congruent (equal).
Linear pair- adjacent angles whose noncommon sides are opposite rays (add to make 180°).
Supplementary- add to make 180.
Complementary- add to make 90.

12. Homework Practice 1-6
Angles Worksheet 1-50