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Vertical angles – are not adjacent, and their sides are formed by two intersecting lines 1 and 3 are vertical angles 2 and 4 are vertical angles 1 2 3 4
Linear pair – two adjacent angles whose noncommon sides are on the same line 5 and 6 are a linear pair 56 Noncommon side common side
1 2 3 4 5 6
If two angles form a linear pair, then they are supplementary m 1 + m 2 = 180˚ 12
Find the measure of RSU › 118˚ R 62˚ S T U
Vertical Angles are congruent 1 3 and 2 4 1 3 2 4
Find the measure of CED 50˚ D A B C E
Find m 1, m 2, and m 3 1 3 2 35˚
Find the value of y (4y-42) = 2y -42 = -2y 21 = y 2y˚ (4y-42)˚
Pg. 78 #1-8
Adjacent, Vertical, Supplementary, and Complementary Angles
2-8: Proving Angle Relationships
EXAMPLE 4 Identify angle pairs
Angles (def) An ACUTE ANGLE is an angle w/ a MEASURE less than 90° (def) A Right angle is an angle w/ a MEASURE = 90° (def) An Obtuse angle is an angle.
Section 1.6 Pairs of Angles
PARALLEL LINES and TRANSVERSALS.
Title of Lesson: Angle Pair Relationships Section: 1.6Pages:
SOLUTION EXAMPLE 4 Identify angle pairs To find vertical angles, look or angles formed by intersecting lines. To find linear pairs, look for adjacent angles.
Angle Pair Relationships
Section 2.7 PROVE ANGLE PAIR RELATIONSHIPS. In this section… We will continue to look at 2 column proofs The proofs will refer to relationships with angles.
Angle Relationships Section 1-5 Adjacent angles Angles in the same plane that have a common vertex and a common side, but no common interior points.
SPECIAL PAIRS OF ANGLES. Congruent Angles: Two angles that have equal measures.
2.4 Vertical Angles. Vertical Angles: Two angles are vertical if they are not adjacent and their sides are formed by two intersecting lines.
Geometry Section 1.5 Describe Angle Pair Relationships.
Geometry Section 1.6 Special Angle Pairs. Two angles are adjacent angles if Two angles are vertical angles if.
Angles Acute angle (def)- angle measure less than 90° Right angle (def)- angle measure= 90° Obtuse angle (def)- angle measure greater than 90° Straight.
1-5 Exploring Angle Pairs. Problem 1: Identifying Angle Pairs Use the diagram provided. Is the statement true? Explain.
Angle Relationships Geometry 1.5.
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