Posted by Simran kaur on Wednesday, September 12, 2012 at 4:37am.
In a trapezium ABCD,ABperpendicular DC.if angle A=4x degree,angle B=(6x+10degree),angle C=(3x10degree) & angle D=5x degree.find each angle of trapezium.

Math  Reiny, Wednesday, September 12, 2012 at 9:03am
The angle sum of a trapezium must be 360° , so
4x + 6x+10 + 3x10 + 5x = 360
18x = 360
x = 20
angle A = 80°
angle B = 130°
angle C = 50°
angle D = 100°
I don't see any perpendicular sides.
Your question contains a contradiction.

Math  Steve, Wednesday, September 12, 2012 at 11:51am
I think he meant AB parallel to DC, if vertices are labeled in cyclic order
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