Isosceles trapezium

Trapezoid YSED (YS||ED) is isosceles.
The size of the angle at vertex Y is 17 degrees.
Calculate the size of the angle at vertex E.

Result

angle DES:  163 °

Solution:

Solution in text angle DES:=







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To solve this example are needed these knowledge from mathematics:

Try conversion angle units angle degrees, minutes, seconds, radians, grads.

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