Chapter 3 – Understanding Quadrilaterals

The opposite sides of a parallelogram are of ________ length.

In the quadrilateral ABCD, the diagonals AC and BD are equal and perpendicular to each other. What type of a quadrilateral is ABCD?

If ABCD is an isosceles trapezium, what is the measure of ∠C?

Which of the following is true for the adjacent angles of a parallelogram?

State the name of a regular polygon of 6 sides.

The diagonal of a rectangle is 10 cm and its breadth is 6 cm. What is its length?

The perimeter of a parallelogram is 180 cm. If one side exceeds the other by 10 cm, what are the sides of the parallelogram?

A _______ is both ‘equiangular’ and ‘equilateral’.

Which of the following quadrilaterals has two pairs of adjacent sides equal and diagonals intersecting at right angles?

Which one of the following is a regular quadrilateral?

What do you call a parallelogram which has equal diagonals?

The sides of a pentagon are produced in order. Which of the following is the sum of its exterior angles?

In a square ABCD, the diagonals bisect at O. What type of a triangle is AOB?

Which of the parallelograms has all sides equal and diagonals bisect each other at right angle?

A diagonal of a rectangle is inclined to one side of the rectangle at 25°. What is the measure of the acute angle between the diagonals?

The ________ of a rhombus are perpendicular bisectors of one another.

ABCD is a parallelogram. The angle bisectors of ∠A and ∠D meet at O. What is the measure of ∠AOD?

he sum of the measures of the three angles of a triangle is ______.

How many diagonals does a rectangle have?

Which of the following quadilaterals has two pairs of adjacent sides equal and diagonals intersecting at right angles?

21. Which one of the following is a regular quadrilateral?

22. The perimeter of a parallelogram whose parallel sides have lengths equal to 12 cm and 7cm is:

23. If ∠A and ∠C are two opposite angles of a parallelogram, then:

24. If ∠A and ∠B are two adjacent angles of a parallelogram. If ∠A = 70°, then ∠B = ?

25. ABCD is a rectangle and AC & BD are its diagonals. If AC = 10cm, then BD is:

26. Each of the angles of a square is:

27. Which of the following is not a quadrilateral?

28. Which of the following quadrilaterals have two pairs of adjacent sides equal and its diagonals intersect at 90 degrees?

29. If AB and CD are two parallel sides of a parallelogram, then:

30. The quadrilateral whose diagonals are perpendicular to each other is: