QUESTION :
Find x in the given quadrilateral.
X
120°
80°
60°
CHOICES
a. 100°
b. 120°
c. 150°
d. 180°
ANSWER:
[tex]\boxed{\sf A.100} [/tex]
Solution:
[tex]\begin{gathered}\rightarrow\boxed{\sf 120+80+60+x=360 } \\ \rightarrow\boxed{\sf x=360-260 } \\ \rightarrow\boxed{\sf x=\blue1\blue0\blue0 }\end{gathered} [/tex]
To find x in quadrilaterals, Firstly let's say the given quadrilaterals, So the result is 360, then subtract it by 260 maybe when you say 3 numbers it the result is 260.Therefore the answer is 100
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