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Tems11 [23]
4 years ago
12

X=18 x=22.5 x=30 x=54

Mathematics
2 answers:
maks197457 [2]4 years ago
4 0

Since (x+90) and 4x are vertical angles, and vertical angles are congruent, you can set them equal to each other.

x+90=4x

90=3x

x=30

monitta4 years ago
3 0

Answer:

<h2>The value of x is 30°</h2>

Step-by-step explanation:

Observe that (x + 90)° and 4x° are verticle angles.

By definition, those angles are equal, taht is

x+90=4x

Then, we solve for x

90=4x-x\\3x=90\\x=\frac{90}{3}\\ x=30\°

Therefore, the value of x is 30°. The third choice is correct.

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