Question

If AB =7cm. what is the length of the DC?

Answer 1

DC IS ALSO 7 CM

IN ΔAOB AND ΔDOC

AO = OC [radii of same circle]

∠AOB = ∠COD [vertically opposite angle]

BO = OD [radii of same circle]

BY SAS CONGRUENT RULE

ΔAOB = ΔCOD

SO, AB=CD {BY C.P.C.T}

SO, CD = 7CM