3 years ago

Help with 1-2 please

Mathematics

2 answers:

Sophie [7]3 years ago

6 0

Answer: 1) 70° 2) x = 55

Step-by-step explanation:

1) If m∠1 = 70°,then m∠8 = 70°.

Because m∠8 is the vertical angle of m∠5, and m∠5 is the corresponding angle of m∠1, which means that m∠8 = m∠1 = 70°. And also m∠1 and m∠8 are alternate exterior angles, they equal to each other.

2) m∠4 = 70°, and m∠7 = 2x, then m∠4 + m∠7 = 180°,because they are consecutive interior angles.

m∠4 + m∠7 = 180°

70 + 2x = 180

2x = 110

x = 55

Alina [70]3 years ago

3 0

Pretty sure it’s 5 but I’m not sure

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