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1.4: Pairs of Angles
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Adjacent angles have -- 1) common vertex 2) common side
3) no common interior points
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When two lines cross, the nonadjacent angles are vertical.
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A linear pair is two adjacent angles whose noncommon sides are opposite rays.
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Without using a protractor, determine each lettered angle measure.
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Without using a protractor, determine each lettered angle measure.
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Without using a protractor, find m<ABC.
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The m<2 = 85o. Find the m<4
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The m<3 = 110o. Find the m<4
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The m<1 = (4x + 134)o and the m<4 = (4x + 30) o
Solve for x.
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The m<2 = (5x + 14)o and the m<4 = (2x + 26) o
Find the m<4.
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Find x.
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Find x.
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Find x.
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<A and <B are supplementary. Find m<A.
m<A = (4x + 12)o ; m<B = (2x + 6)o
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Identify each angle pair as vertical angles, linear pair, just adjacent, or none of these.
<1 and <2 <3 and <4 <2 and <5 <1 and <4 <3 and <5
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