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Rainbow [258]
2 years ago
12

Find the measure of the numbered angle. m∠8 =

Mathematics
2 answers:
Artyom0805 [142]2 years ago
6 0

Answer:

∠ 8 = 140°

Step-by-step explanation:

∠ 8 and 40° are adjacent angles and supplementary ( sum to 180° ), then

∠ 8 = 180° - 40° = 140°

iris [78.8K]2 years ago
6 0

Answer:

m∠8 = 140°

Step-by-step explanation:

40 and angle 8 are supplementary angles

this means they add up to 180°

so, you can make the following equation:

40 + m∠8 = 180

<em>subtract 40 from both sides of the equation</em>

40 - 40 m∠8 = 180 - 40

m∠8 = 180 - 40

m∠8 = 140

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