Quadrilaterals
CBSE · Class 8 · Mathematics
Most important questions from Quadrilaterals for CBSE Class 8 Mathematics board exam 2026. MCQs, short answer, and long answer questions with marks.
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Sample Questions
A square has diagonals of length 16 cm each. What is the length of each segment when the diagonals bisect each other?
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8 cm
Each diagonal is 16 cm. Since the diagonals bisect each other, each diagonal is divided into two equal parts. So each segment is 8 cm.
In a square, one diagonal bisects an angle of 90°. What is each half-angle?
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45°
A diagonal of a square bisects the angle of the square. So 90° is divided into two equal parts: 90 ÷ 2 = 45°.
A rhombus has one angle equal to 50°. What are the two opposite angles of the rhombus?
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50° and 50°
In a rhombus, opposite angles are equal. If one angle is 50°, the opposite angle is also 50°.
A rhombus has one angle 50° and a diagonal splits the adjacent angle into two equal parts. What is each of those equal parts if the triangle around the diagonal gives a total of 180°?
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65°
The two equal parts are marked as a and a. Using the triangle angle sum, a + a + 50 = 180. So 2a = 130 and a = 65°.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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