4. (1 Point) Solve for x and determine the measure of angle BDC.
4
5
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x = 180°
x = 90°
x = 165°
X = 75°

Answer:
x = 165°
Step-by-step explanation:
Linear pair: If the uncommon arm of adjacent angles form a straight line, then they are called linear pair and these adjacent angles add up to 180°
15 + x = 180
Subtract 15 from both sides,
x = 180 - 15
x = 165°