Question

8) Given m∠ABC is 124 and m∠ABD IS 37, find m∠DBC.

Answer 1

To obtain the measure of the missing angle, subtract the measure of ∠ABD from the measure of ∠ABC. Note that m∠ABD + m∠DBC = m∠ABC.

`m\angle DBC=m\angle ABC-m\angle ABD`

Thus, we have:

`m\angle DBC=124\degree-37\degree=87\degree`