Question

the angles below form a linear pair. what is the measure of angle dbc? 135° m∠dbc = ?°

Explanation:

Step1: Linear pair sum to 180°

$\angle ABC + \angle DBC = 180^\circ$

Step2: Substitute known angle

$135^\circ + \angle DBC = 180^\circ$

Step3: Solve for $\angle DBC$

$\angle DBC = 180^\circ - 135^\circ = 45^\circ$

Answer:

45°