Question

URGENT HELP PLZ MATH!

Answer 1

Answer:

The correct option is D.

Step-by-step explanation:

From the given figure it is clear that the measure of angle A is 45° and the measure of angle C is 15°.

According to the angle sum property of triangles, the sum of interior angles of a triangle is 180°. It means in triangle ABC,

$\angle A+\angle B+\angle C=180^{\circ}$

$45^{\circ}+\angle B+15^{\circ}=180^{\circ}$

$\angle B+60^{\circ}=180^{\circ}$

$\angle B=180^{\circ}-60^{\circ}$

$\angle B=120^{\circ}$

The measure of angle B is 120°. Therefore the correct option is D.

Answer 2

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➷ Angles in a triangle total to 108 degrees

180 - (45 + 15) = 120

Angle B is 120 degrees.

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