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Subject :IMO    Class : Class 8

Select the INCORRECT statement.

A Every rectangle is a trapezium.
B A quadrilateral can be drawn if all four sides and one angle is known.
C Triangle is a polygon whose sum of exterior angles is double the sum of interior angles.
D If diagonals of a quadrilateral are equal, it must be a rectangle.


Ans 1:

Class : Class 7
Answer should be D diagonals are equal in square as well So if diagonals are equal it need not be a rectangle

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8
D is answer

Ans 4:

Class : Class 8
i agree, A is correct, there is no incorrect answer, as a rectangle is a special trapezium

Ans 5:

Class : Class 8
A rectangle is a type of trapezium only and anyway the diagonals of a square is also equal

Ans 6:

Class : Class 8

Ans 7:

Class : Class 9
Trapezium is a quadrilateral with two parallel sides. Parallelogram is a special case of trapezium and rectangle is a special case of parallelogram, hence rectangle is a special case of trapezium

Ans 8:

Class : Class 9
Both a and d options are correct, its marker wrong. Rectangle is a special trapezium and square also has all sides equal

Ans 9:

Class : Class 9
Wrong question guys !

Ans 10:

Class : Class 7

Ans 11:

Class : Class 9
The answer is D

Ans 12:

Class : Class 9

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