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Ipatiy [6.2K]
3 years ago
13

Use exterior angles to solve for interior angles.

Mathematics
1 answer:
Dmitry [639]3 years ago
8 0

Answer:

I could be mistaken but I believe that x= 42.5

Step-by-step explanation:

To find this, you solve for 4x+10=180.

This is because the total angle measure of line RD should be 180 degrees.

When you solve this equation, you get 42.5 for X

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