Question

in fig AB||CD ABO= 60°, AOB=20° then find ODC


i need a step by step explanation ​

Answer 1

Step-by-step explanation:

Given,

AB||CD

ABO= 60°

AOB= 20°

To find,

ODC

Solution,

In ∆ABO and ∆CDO,

AB||CD (given)

AOB=COD (20°)

OBA=ODC (60°)

Therefore, ∆ABO is congruent to ∆CDO by AAS congruence test.

OBA=ODC=60°

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