Question

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Answer 1

Answer:

angle a 60 degree angle b and angle c 135 degree angle d 30 degrees

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Answer 2

Step-by-step explanation:

In Traingle ABC,

Angle B = Angle C = 60 degrees

we know that

angle A + angle B + angle C = 180

or, angle A +60 + 60 = 180

or, Angle A = 60

In Traingle BCD,

Angle B = Angle C = 75 degrees

degreeswe know that

Angl B + angle C + angle D = 180

= 180or, 75 + 75 + angle D = 180

= 180 or, Angle D = 30

Therefore, angles of quadrilateral ABCD is

• A= 60
• B= 60+75 =135
• C= 60+75 =135
• D= 30