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ryzh [129]
3 years ago
13

What is the measure of a?

Mathematics
2 answers:
JulijaS [17]3 years ago
5 0
The answer is 129 because the opposite corners of a quadrilateral has to equal 180°
arsen [322]3 years ago
5 0

Answer:

a=129

Step-by-step explanation:

the angles are complementary which is is 180

51+a=180

a=180-51

a=129

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