Question

answer correctly
i will mark as brainliest​

Answer 1

Step-by-step explanation:

In the trapezium the DC and AB lines are parellel

So the triangles made by joining the center O are congruent so the two triangles ODC and ABO are congruent then they are similar

Hope this helps ♥

Answer 2

you know that opposite sides of a Trapezium are parallel to each other

therefore,

DC || AB

In ∆AOB ,∆COD

angleA =angle C

angleB=angleD

by AA criteria

∆AOB ~∆COD

i hope this will surely help u mate