find all the four angles named as angle A Angle B angle C and angle d
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find all the four angles named as angle A Angle B angle C and angle d
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Step-by-step explanation:
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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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