Question

define isosceles trapezium ​

Answer 1

An isosceles trapezium is a convex quadrilateral with a line of symmetry bisecting one pair of opposite sides.

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Answer 2

$\huge\text{\underline{\underline{Isosceles\: trapezium:-}}}$

★ In each case of non-parallel sides are equal, then the base angles are equal, it is known as isosceles trapezium.