lafayette7727
06.08.2019 •
Mathematics
Find the measure of angle a.
a. 36°
b. 108°
c. 144°
d. 54°
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Ответ:
B
Step-by-step explanation:
The sum of the interior angles in a quadrilateral is 360°
Sum the given angles and equate to 360, that is
3x + 4x + 2x + x = 360
10x = 360 ( divide both sides by 10 )
x = 36
Hence
∠A = 3x = 3 × 36° = 108°
Ответ:
-5
hope this helps