in a figure to ABCD is a trapezium in which ab DC find the value of x and y
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Answer:
X =34
Y =115
Step-by-step explanation:
use the formula of cointerior angle
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Answered by
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hi
the value of x will be 34 as........
sum of supplementary angle is 180 degree
so, angle A + angle D = 180
(2x-10) + (3x+20) = 180
after opening the bracket
5x + 10 = 180
x= 180-10÷5
x= 34
the value of y will be 115 as......
Sum of angle of trapezium is 360 degree
so , A + B + C + D = 360
(2 × 34 - 10) + 65 + (3 × 34 + 20) + Y = 360
(68 - 10) + 65 + (102 + 20) + Y = 360
58 + 65 + 122 + Y =360
245 + Y = 360
y = 360 - 245
y = 115
so ,X = 34 and Y = 150
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