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Finding Angle Measures When Parallel Lines Are Cut By a Transversal

Finding Angle Measures When Parallel Lines Are Cut By a Transversal-example-1
User Kostek
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1 Answer

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18 votes

Answer:

<3, < 6, <7 are all 102,

<1, <4, <5 and <8 are all 78

Explanation:

If you slide angles 1, 102, 3 qnd 4 down along p, they will fit perfectly over 5,6,7 and 8. So if you find the top four angles, you have found the bottom 4 angles.

<3 is a vertical angle to 102 and vertical angles always have the same measurement.

Angles 1 and 4 are supplemental to 102. That means that the two angles will add to 180. 180 - 102 = 78

User Sergei Gorjunov
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