Question

find the unknown angles specified below in each triangle.​

Answer 1

Answer:

116°

Step-by-step explanation:

(Angle sum property of a triangle = 180°)

angle A + angle C + angle ABC = 180°

66° + 50° + angle BAC = 180°

116° + angle ABC = 180°

angle ABC = 180° - 116°

angle ABC = 64°

angle ABD + angle ABC = 180°

angle ABD + 64° = 180°

angle ABD = 180° - 64°

angle ABD = 116°

So, the measure of the unknown angle is 116°

HOPE IT HELPS YOU

Answer 2

Answer:

In triangle ABC,

angle A + angle B + angle C = 180     ( Sum of angles ina triangle is 180.)

66 + angle B + 50 =180

angle B = 180 - 116

angle B = 64

Let unknown angle be x

angle B + x = 180                               ( Sum of angles on a straight line is 180.)

64 + x =180                                                                                                                      

x = 180 - 64

x = 116

Step-by-step explanation:

Hope it helps