Question

in the given figure ABllCD find the value if X​

Answer 1

the easiest way to find x is to connect line AB and CD

lets just connect A and C

we know that AB||CD

so L A +L C= 180 (sum of alternate opposite)

Observe the Pentagon ABODC

L A+L C + L B+ L D+ L O= 540

180+135+145+ x= 540

180+280+x=540

x= 540-460

= 80°