Question

5. In the given diagram, the value of x is
A
60°
B
50°
C
80°
(b) 190°
(a) 170°
(c) 100°
(d) 90°​

Answer 1

Step-by-step explanation:

sum of all angles in a quadrilateral is 360°

A+B+C+D=360

60+50+80+(360-x)=360

550-x=360

x=190°

Answer 2

angle adc = 170 (sum of interior angles of a quadrilateral )

360 - 170 = 190 (reflex angle )

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