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Class 9 Quadrilaterals worksheet
CBSE Mathematics. Parallelograms, rhombuses, rectangles, the mid-point theorem. Every sheet has 20 questions in three sections and an answer key, and the numbers change every time.
Sample questions
Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.
Section A · multiple choice
- 1.
Three angles of a quadrilateral are 55°, 80°, 104°. The fourth angle is:
- 131°
- 239°
- 59°
- 121°
Answer
(d) 121°
360° − 239° = 121°
- 2.
One angle of a parallelogram is 130°. The angle opposite it is:
- 130°
- 50°
- 230°
- 40°
Answer
(a) 130°
opposite angles are equal
- 3.
The diagonals of a rhombus are 14 cm and 48 cm. Each side of the rhombus is:
- 50 cm
- 31 cm
- 32 cm
- 25 cm
Answer
(d) 25 cm
the diagonals bisect at right angles: √(7² + 24²) = 25
Section B · short answer
- 4.
Two adjacent angles of a parallelogram are (4x + 36)° and (2x + 6)°. Find x and all four angles.
Answer
x = 23; 128°, 52°, 128°, 52°
adjacent angles are supplementary: 6x + 42 = 180
- 5.
Two opposite angles of a parallelogram are (x + 3)° and (3x − 45)°. Find x and the angles of the parallelogram.
Answer
x = 24; 27°, 153°, 27°, 153°
opposite angles are equal: −2x = −48
Section C · long answer
- 6.
A rectangular field is 60 m by 80 m. How much shorter is it to walk along the diagonal than along two sides?
Answer
40 m
diagonal = √(60² + 80²) = 100 m; 140 − 100 = 40
Fresh sheets for your child
In the app, every Quadrilaterals sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.
Coming soon for Android and iPhone.