Question

ABCD is a trapezium in which AB||DC and angle A= angle B= 40° . find angle C and angle D ..

The length of a diagonal of a square is 8 cm find the length of the side of the square..

Answer 1

since A=B=40

therefore its an isosceles trapezium

therefore the other two angles must also be equal

x+x+40+40=360

2x=280

x=140

as we know diagonal of a square=2^1/2 times of length

(from pythagoras theorem)

8=2^1/2 L

l=4*2^1/2