Question

find the missing angle measure.

Explanation:

Step1: Identify total and known angles

The large angle is split into two smaller angles: $18^\circ$ and $35^\circ$. We need the total angle.

Step2: Add the two known angles

$\text{Missing angle} = 18^\circ + 35^\circ$

Step3: Calculate the sum

$18 + 35 = 53$

Answer:

53°