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BIG IDEAS MATH
aroslin001
#19- i
USING TOOLS The sum of the angle measures of a quadrilateral is 360°. Write and solve an equation to find the value of x.
full
100
120
100
The equation is
= 360
X
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Answer 1

equation: 320+x=360, answer: 40

Explanation:

add 100,200 and 100 to get 320

360-320=40

x=40