Question

The two base angles of a trapezium are 140 and 110. Find the other two angles.​

Answer 1

Answer:

Let a be 140° and b be 110°

To find : C and d

Proof:

We know that a+b+c+d = 360° (as the sum of all the angles in a quadrilateral is 360°)

140°+110°+c+d = 360°

250°+c+d= 360°

c+d = 110°

Let c=d=x

X+X=110°

2x= 110°

X = 55°

Therefore, c = d = 55°