Question

15. In a trapezium ABCD with AB II DC if angle B = 120, find angleC.​

Answer 1

Answer:

Given a trapezium ABCD with AB || DC

And Angle B is equal to 120°

A/Q ,We need to calculate the value if angle C

.So, we know that the sum. of two angles or adjacent angles of a Quadrilateral is 180°

So, we can calculate out the value of the angle C by adding the angle with Angle B and then the total angle of the sum of the angles will be equal to 180° we need to show that then we can easily find it

•°•

$= > angle \:b \: + angle \: c = 180 \\ \\ = > 120 \degree + angle \: c \: = 180 \\ \\ = > angle \: c = 180 - 120 = 60 \degree$

So from the above calculation we find the value of the angle c is

$\boxed {\red{60 \degree}}$