Question

Please answer it is from mathematics​

Answer 1

Answer:

in triangle AOB and triangle COD

Step-by-step explanation:

AB=CD(Given)

AO=OD(O is the mid point)

CO=OB(O is the mod point)

Triangle AOB congruence triangle COD

By (SSS) Congruency

Answer 2

Answer:

given = AB||CD.

OD=AO.

to show =triangle AOB =~ DOC.

O is mid point of BC.

then OC=ON.

NOW in triangle AOB and DOC.

Angle DOC=AOB (vertically opposite angles).

Angle COD =BOA. (CD||AB and alternative angles are always equal).

DO=AO (given).

By ASA criteria

triangles AOB =~ DOC. -------- > (i).

CO =OA (CPCT)

so o is mid point of BC. ---------->(ii).

I hope it will helps you..

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