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Name the 4 exterior angles

<1

<2

<8

<7

(Outside the parallel lines)

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Name the 4 Interior Angles

<4

<3

<6

<5

(Inside the parallel lines)

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Name the pairs of Vertical Angles (4 total)

<1 and <3

<2 and <4

<6 and <8

<5 and < 7

(across from each other)

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Name all of the Linear Pairs (8 total)

<1 and <2              <2 and <3

<3 and <4              <4 and <1

<5 and <6              <6 and <7

<7 and <8               <8 and <5

(form a straight line, add up to 180^o)

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Name the 2 Consecutive Interior Angles

<4 and <5

<3 and <6

(Inside the parallel lines, Same side of transversal)

*pairs add up to 180^o

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Name the 2 Alternate Interior Angles

<4 and <6

<3 and <5

(Inside the parallel lines, Opposite sides of transversal)

*Pairs are equal

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Name all of the Alternate Exterior Angles

<2 and <8

<1 and <7

(outside the parallel lines, opposite side of transversal)

*pairs are equal

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Name the Corresponding Angles (4 total)

<1 and <5

<2 and <6

<3 and <7

<4 and <8

(same position- ex. upper right, lower left)

*Pairs are equal

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If <3=x and <5=3x-100. Find both angle measures.

<3 = <5

Equation: x=3x-100

Solve for x

x=50

(plug it in)

<3= 50^o

<5= 50^o

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If <3=2x+20 and <6= x-20. Find both angle measures.

<3 + <6 = 180

Equation: 2x+20 + x-20 = 180

(solve for x)

x=60

(plug it in)

<3 = 140^o

<6 = 40^o