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 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 2:
Class : Class 10
Both a and d options are correct, its marker wrong. Rectangle is a special trapezium and square also has all sides equal
Ans 5:
Class : Class 9
A is correct. By definition, a trapezium has ONLY ONE pair of parallel sides. A rectangle has 2 pairs of parallel sides, hence it is not a trapezium.
Ans 6:
Class : Class 8
i agree, A is correct, there is no incorrect answer, as a rectangle is a special trapezium
Ans 7:
Class : Class 10
The answer is D as Rectangle is also a special type of trapezium so it is correct . Also, the option B is correct. Option C is correct too as interior angle sum of triangle is 180 and the exterior angle sum is double i.e. 360The correct answer would be option D as isosceles trapezium also has its diagonals equal therefore it is the incorrect statement required. Therefore, the answer should be D instead of C
Ans 10:
Class : Class 9
everyone to kindly check my panswer post it will most probably help u resolve what is the answer and please if there is any incorrect answer in my provided answer, please tell that thing.
Ans 11:
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 15:
Class : Class 8
all options are correct(A) a rectangle follows all the characteristics of a trapizium. It has one pair of parllel sides. it has four sides and sum of all the angles is 360(b) it can be drawn like one angle is 90 and four sides are 40,40,50,50 than it is a rectangle which is quadrilateral(c)It is a law that sum of ext. angles in every polygon is 360 and sum of int. angles in a triangle is 180 which is half of 360(d) all the quadrilaterals that have equal diagonals follow all the rules of a rectangle like square which has two set of equal and parllel sides and its diagonals are equal. A square also has all right angles.
Ans 18:
Class : Class 9
all options can be correct but if we see logically, option (D) states that "if the diagonals of a quadrilateral are equal it must be a rectangle" whereas the diagonals of a kite can also be equal.
Ans 20:
Class : Class 8
A rectangle is a type of trapezium only and anyway the diagonals of a square is also equal
Ans 21:
Ans 24:
Class : Class 8
all options are true, i think option(c) should be "Triangle is a polygon whose exterior angle is double its interior angle". This way option(c) will be INCORRECT
Ans 25:
Class : Class 9
Wrong Question guys both a and d look incorrect as rectangle is not a trapezium and even square's diagonals are equal.
Ans 26:
Class : Class 9
Since the options seem incorrect, kindly report an error for this question. Hopefully this gets reviewed.