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Fynjy0 [20]
3 years ago
9

Find the unknown angle measure.

Mathematics
1 answer:
spin [16.1K]3 years ago
6 0

Answer:

x=80

Step-by-step explanation:

The sum of interior angles in a quadrilateral is 360°

the square represents a right angle= 90 degrees

124+66+90=280

360-280=80

x=80

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