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Step-by-step explanation:
In ∆ BAD,
angle BAD = 32° (GIVEN)
BD=AD (GIVEN)
∆BAD IS AN ISOSCELES TRIANGLE
ANGLE BAD = ANGLE DBA = 32° (ANGLE OPPOSITE TO CONGRUENT SIDES ARE CONGRUENT)
x = 32°
In ∆ BAD,
Angle B + Angle A + Angle D = 180°
32° + 32° + Angle D = 180°
64° + Angle D = 180
Angle D = 180 - 64
Angle D = 106°
Angle ADB = 106°
ANGLE ADB + ANGLE CDB = 180° (ANGLES IN A LINEAR PAIR)
106 + ANGLE CDB = 180
ANGLE CDB = 180 - 106
ANGLE CDB = 74°
y = 74°
IN ∆ CDB,BC = BD ( GIVEN )
ANGLE CDB = ANGLE BCD = 74° (ANGLE OPPOSITE TO CONGRUENT SIDES ARE CONGRUENT)
In ∆ CDB,
ANGLE C + ANGLE D + ANGLE B = 180°
74 + 74 + ANGLE B = 180°
148 + ANGLE B = 180°
ANGLE B = 180 - 148
ANGLE B = 32°
z = 32°
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