Question

What is m/D?
118°
B
87°
A
D
23/24-
A
12

Answer 1

`62^\circ`

Explanation:

This is a cyclic quadrilateral (all points of the quadrilateral are on the circle), meaning opposite angles are supplementary (add up to
`180^\circ`).

`\angle D` is opposite
`\angle B`, which is equal to
`118^\circ`. This means
`\angle D` is equal to
`180^\circ - 118^\circ`, which is
`\boxed{62^\circ}`.