Worksheets › Class 8 › Quadrilaterals
Class 8 Quadrilaterals worksheet
CBSE Mathematics. Angle sum, parallelograms, rectangles, rhombuses, squares, trapeziums and kites: sides, angles and diagonals. 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 65°, 90° and 139°. The fourth angle is:
- 294°
- 76°
- 67°
- 66°
Answer
(d) 66°
360° − 294°
- 2.
One angle of a parallelogram is 135°. The angle next to it is:
- 45°
- 135°
- 225°
- 46°
Answer
(a) 45°
adjacent angles add to 180°
- 3.
The angles of any quadrilateral add up to:
- 540°
- 270°
- 360°
- 180°
Answer
(c) 360°
a diagonal makes two triangles
Section B · short answer
- 4.
The angles of a quadrilateral are in the ratio 1 : 4 : 3 : 1. Find them.
Answer
40°, 160°, 120°, 40°
360° ÷ 9 = 40°
- 5.
One angle of a parallelogram is 100° more than the angle next to it. Find all four angles.
Answer
40°, 140°, 40°, 140°
x + x + 100 = 180°
Section C · long answer
- 6.
Vikram makes a window frame with opposite sides 126 cm and 90 cm. To check it is a rectangle, Vikram measures both diagonals: 155 cm and 158 cm. Is it a rectangle? Why?
Answer
No, the diagonals are not equal
a parallelogram is a rectangle exactly when its diagonals are equal
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.