An Isosceles triangle has at least 2 sides that are both the same length.The last side is a different length.
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it has 2 equal sides
2 equal sides 2 equal angles
It only has two equal lengths out of however many sides like an isosceles triangle
A trapezium can have 0, 2 or 3 sides of equal length.0 equal sidesThis is the general state of a trapezium.2 equal sidesThe two parallel sides can never be equal.The two non-parallel sides can be equal. In this case, the trapezium is an isosceles trapezium.Or one of the parallel sides can be equal to one of the non-parallel sides. No special name.3 equal sidesThese would have to be the two non-parallel sides and one of the others. The trapezium is isosceles.
all triangles have three corners. An isosceles triangle also has two sides and atwo angles that are equal.