Question

Given the diagram, a supplement to ∠ABC could be:

∠BDC
∠DAB
∠ADC
∠BAC

Answer 1

∠DAB

Explanation:

A supplement to an angle is one that will sum to 180° with the given angle. ∠ABC is 110°; this means its supplement will be 180-110 = 70°.

The angle in the quadrilateral that is 70° is ∠DAB.

Answer 2

I would say angle DAB