find the unknown angle in the figure below using
the angle of sum property of quadrilateral
A=69
B=122°
C=85
D=X.
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sum of all angles in a quadrilate =360
A+B+C+D=360
69+122+85+X=360
X=360-276
X=84
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Answer:
84°
Step-by-step explanation:
A+B+C+D=360°(by angle sum property of a quadrilateral)
69°+122°+85°+X=360°
X=360°-276°
X=84°
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