Q.1. What are two main properties of a quadrilateral?
- Sum of four angles is 360°.
- It has 4 sides.
Q.2. Write two main properties of a parallelogram.
- Diagonals bisect each other.
- Opposite sides are equal.
Q.3. Do you know any difference between a parallelogram and a trapezium?
In a parallelogram, two pairs of opposite sides are parallel. In a trapezium, one pair of opposite sides is parallel.
Q.4. If base and altitude of a parallelogram are same, then what will be area of parallelogram?
Base x altitude
Q.5. What do you mean by a parallelogram?
A parallelogram is a quadrilateral in which opposite sides are equal and parallel.
Q.6. If you join the mid-points of consecutive sides of a quadrilateral, what shape will you obtain?
Parallelogram
Q.7. If you join the mid-points of consecutive sides of a rectangle, what figure will you obtain?
Rhombus
Q.8. If you join the mid-points of consecutive sides of a rhombus, what figure will you obtain?
Rectangle
Q.9. Which theorem is used in this activity?
Mid-point theorem
Q.10. Write the name of different kinds of parallelograms.
Rectangle, square and rhombus.
Q.11. If base and altitude of a parallelogram are same, then what type of parallelogram will be obtained?
Square
Q.12. What is the area of a parallelogram?
Base x corresponding altitude
Q.13. In a parallelogram, if one angle is 90°, then what type of parallelogram you will get?
Rectangle
Q.14. Is a parallelogram a quadrilateral?
Yes
Q.15. What do you mean by a quadrilateral?
A quadrilateral is a plane closed figure bounded by four line segments.
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