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Question

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(a) Right Trapezium

(b) Equilateral Trapezium

(c) Isosceles Trapezium

(d) None of these

Answer
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In this question, we are supposed to find a trapezium in which no parallel sides are equal is called what kind of trapezium.

So, before proceeding for this, we must know the various types of trapezium and also the basic definition of the trapezium.

So, trapezium is defined as quadrilateral with a pair of parallel sides.

Also, a parallelogram is called a trapezium if it has two parallel sides.

So, a trapezium ABCD is formed with parallel sides as AB and CD.

Now, the first type of trapezium is right trapezium which has at least two right angles as shown in the figure:

Then, the second type of trapezium is equilateral trapezium which is not possible as if it has all equal sides then it becomes a rhombus and contradicts the condition of the trapezium.

Then, the third type of trapezium is isosceles trapezium in which two sides are opposite and parallel but no parallel sides are equal. It has the property that there is a line bisecting one pair of opposite sides as:

So, from the above condition, a trapezium in which no parallel sides are equal is said to be isosceles trapezium.