CBSE  /  Class 8  /  Maths  /  Understanding Quadrilaterals

  • 1. 
    If ∠A of a parallelogram ABCD is of 60°, then the measure of the opposite angle ∠C is

  • 60°
  • 120°
  • 30°
  • none of these.

  • 2. 
    If all the four sides of a parallelogram are equal and the adjacent angles are of 120° and 60°, then the name of the quadrilateral is

  • rectangle
  • square
  • rhombus
  • kite.

  • 3. 
    In a kite, what is false?

  • The diagonals are perpendicular to each other
  • The diagonals bisect each other
  • Only one pair of opposite angles is equal
  • All the four sides are equal.

  • 4. 
    Two adjacent angles of a parallelogram are of equal measure. The measure of each angle of the parallelogram is

  • 45°
  • 30°
  • 60°
  • 90°.

  • 5. 
    The angle sum of a convex polygon with number of sides 7 is

  • 900°
  • 1080°
  • 1440°
  • 720°.

  • 6. 
    The angle sum of a convex polygon with number of sides 8 is

  • 720°
  • 900°
  • 1080°
  • 1440°

  • 7. 
    The angle sum of a convex polygon with number of sides 10 is

  • 720°
  • 900°
  • 1080°
  • 1440°.

  • 8. 
    The measures of the three angles of a quadrilateral are 65°, 75° and 85°. The measure of the fourth angle is

  • 65°
  • 75°
  • 85°
  • 135°

  • 9. 
    The measures of each of the four angles of a quadrilateral are equal. Find the measure of each angle.

  • 45°
  • 30°
  • 60°
  • 90°

  • 10. 
    The measures of two angles of a quadrilateral are 110° and 100". The remaining two angles are equal. The measure of each of the remaining two angles is

  • 30°
  • 60°
  • 75°
  • 45°
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