A trapezium has angle d = 2x+10° angle c 92 ° angle b =y° angle a = x+20° find the values of x and y
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Here, ABCD is isosceles trapezium.
An isosceles trapezium has a pair of parallel sides.
∴ AB∥CD
Its non parallel sides are equal.
∴ AD=BC
Diagonals of an isosceles trapezium are equal.
⇒ AC=BD
Base angles of equal sides has equal angles.
∴ ∠C=∠D
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