Practice

Symmetry — Practice

15 questions 15 min Recall + understand

Q1. A figure is said to have symmetry when
- A. All its sides are equal in length
- B. Some part or parts of the figure repeat in a definite pattern
- C. It can be drawn using only a ruler
- D. Its area is greater than its perimeter
Q2. Why is the picture of a cloud said to be NOT symmetric in the chapter?
- A. Because clouds are very large
- B. Because it has no repetitive pattern of parts
- C. Because it has many colours
- D. Because it has no straight edge
Q3. A line of symmetry of a figure is best defined as a line that
- A. Passes through the centre of the figure
- B. Divides the figure into two parts of equal area only
- C. Cuts the figure into two parts that exactly overlap when folded along it
- D. Joins two opposite vertices of the figure
Q4. Another name used in the chapter Summary for a line of symmetry is
- A. Centre line
- B. Axis of symmetry
- C. Diameter
- D. Median
Q5. A scalene triangle (all three sides of different lengths) has how many lines of symmetry?
- A. 0
- B. 1
- C. 2
- D. 3
Q6. How many lines of symmetry does a square have?
- A. 2
- B. 3
- C. 4
- D. 6
Q7. A rectangle that is not a square has lines of symmetry equal to
- A. 0
- B. 1
- C. 2
- D. 4
Q8. An equilateral triangle (a triangle with equal sides and equal angles) has lines of symmetry equal to
- A. 1
- B. 2
- C. 3
- D. 6
Q9. A regular hexagon (a hexagon with equal sides and equal angles) has lines of symmetry equal to
- A. 3
- B. 4
- C. 6
- D. 12
Q10. A figure is said to have rotational symmetry if
- A. It can be folded into two equal halves
- B. It looks exactly the same after being rotated by some angle about a fixed point
- C. Its area equals its perimeter
- D. All its angles are equal
Q11. The fixed point about which a figure is rotated to check for rotational symmetry is called the
- A. Vertex of rotation
- B. Centre of rotation
- C. Axis of rotation
- D. Line of symmetry
Q12. The angles of symmetry of a square are
- A. 60 deg, 120 deg, 180 deg, 360 deg
- B. 45 deg, 90 deg, 135 deg, 180 deg
- C. 90 deg, 180 deg, 270 deg, 360 deg
- D. 30 deg, 60 deg, 90 deg, 360 deg
Q13. Which angle of rotation is an angle of symmetry for every figure?
- A. 90 deg
- B. 180 deg
- C. 270 deg
- D. 360 deg
Q14. How many lines of symmetry does a circle have?
- A. 1
- B. 4
- C. Infinitely many
- D. It depends on the size of the circle
Q15. Priya folds a paper in half, drops some ink on one side, presses the halves together and then opens the paper. What is the role of the fold line in the resulting figure?
- A. It is the centre of rotation of the figure
- B. It is a line of symmetry of the figure
- C. It is the diameter of the figure
- D. It has no special meaning for the figure

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