in the following figure, AB||DC and AD=BC. Find the value of x.
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Answer:
30cm
Step-by-step explanation:
ABCD is a isosceles trapezium,
angle A= angle B
AD = BC = 10cm
BCDE is a parallelogram so
angle B = angle D
Let us draw a traversal line DE
DC = EB = 20cm
ADE is a triangle
angle A + angle E + angle D = 180 degrees
angle D = 180-(60+60)
= 60 degrees
ADE is a equilateral triangle
AE=AD=10cm
AE + EB = x
10cm + 20cm = 30cm
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