Question

find all the four angles named as angle A Angle B angle C and angle d​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

sum of angle of quadrilateral = 360°

2y + 21 + y - 7 + y + 4 + 2y = 360°

6y + 18 = 360°

6y = 360° - 18

y = 342

6

y = 57°

Angle A = 2y +21 = 2× 57 +21 = 135°

Angle B = y +4 = 57 + 4 = 61°

Angle C = 2y = 2 × 57 = 114°

Angle D = y - 7 = 57 - 7 = 50°

VERIFICATION

135° + 61° + 114° + 50° = 360°

H.P.

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