Question

in figure calculate the measurement of angle a,b,c​

Answer 1

Answer:

50°

Step-by-step explanation:

sum of the opposite sides of the quadrilateral is always 180°

angle ABC + angle AOC = 180°

ANGLE ABC = 180°- 130°

= 50°

Answer 2

Answer:

angle ABC =50 degree (sum of opposite angle in any cyclic quadrilateral is 180)