The measure of ∠ABD is 60° and the measure of ∠ABC is 155° . What is the measure of ∠DBC ? (1 point) Responses 95° 95 degrees 155° 155 degrees 180° 180 degrees 215°
The measure of ∠DBC can be found by subtracting the measure of ∠ABD and ∠ABC from 180°, since the three angles in a triangle add up to 180°.
∠DBC = 180° - ∠ABD - ∠ABC
∠DBC = 180° - 60° - 155°
∠DBC = 180° - 215°
∠DBC = -35°
Since angles cannot have negative measures, the value of ∠DBC cannot be determined with the information given.