Exploring Angles and Angle Relationships

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Presentation transcript:

Exploring Angles and Angle Relationships Chapter 1.6 & 1.7

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

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°.

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.

Homework Practice 1-6 Angles Worksheet 1-50