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Maths Quadrilaterals Class 8 (Ganita Prakash) MCQ and Assertion Questions

10 Question MCQ (including Assertion) · Class 8 · Maths · CBSE

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Chapter 4 Class 8 - Quadrilaterals (Ganita Prakash) | 10 questions | about 8 minutes

Practise Quadrilaterals Class 8 (Ganita Prakash) with Teachoo's 10 Question MCQ (including Assertion) (Class 8 · Maths · CBSE). Practise these questions in a free interactive quiz with answer feedback.

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Question 1 of 10
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Question 1 of 10
A carpenter places two equal wooden strips so that they cross at their common midpoint and make an angle of 70°. A thread joins the four endpoints. What quadrilateral is formed?
Equal diagonals intersect at their common midpoint; angle between them is 70°.
Equal diagonals intersect at their common midpoint; angle between them is 70°.
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Question 2 of 10
Assertion (A):
The diagonals of a rhombus are strictly always equal in length.
Reason (R):
A rhombus is defined as a quadrilateral in which all four sides share the exact same length.
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Question 3 of 10
A square floor tile has diagonal 12√2 cm. What is the length of one side?
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Question 4 of 10
A window grille is a parallelogram. One diagonal is 14.6 cm long. The diagonals cross at O. What is AO?
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Question 5 of 10
Assertion: If two equal diagonals bisect each other and meet at 60°, the quadrilateral formed must be a square.
Reason: The diagonals of a square bisect each other at right angles.
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Question 6 of 10
Assertion (A):
If the adjacent sides of a generic rectangle are constrained to be equal in length, the figure unequivocally transforms into a square.
Reason (R):
A square is formally defined as a rectangle in which all four sides are of equal length.
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Question 7 of 10
Assertion (A): In a parallelogram, adjacent angles are invariably equal to each other.

Reason (R): In a parallelogram, opposite sides are parallel, establishing adjacent angles as supplementary (adding up to 180°).
A) Both A and R are true and R is the correct explanation of A.
B) Both A and R are true but R is not the correct explanation of A.
C) A is true but R is false.
D) A is false but R is true.
Answer:DSolution:Assertion A is strictly false. Adjacent angles in a generic parallelogram are NOT equal (unless the shape is specifically a rectangle). Reason R is true; transversals crossing parallel lines mean the adjacent interior angles sum to 180°.
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Question 8 of 10
Assertion (A):
It is geometrically impossible to construct a quadrilateral containing exactly three right angles and one acute angle.
Reason (R):
The sum of all four interior angles in any convex quadrilateral is exactly 360°.
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Question 9 of 10
A builder says, 'My frame is both a kite and a parallelogram.' What is the most precise name for the frame?
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Question 10 of 10
A school flag panel is a square. A diagonal is drawn from one corner to the opposite corner. Into what two angles does it divide a corner?
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