RS Aggarwal Class 6 Math Seventeenth Chapter Quadrilaterals Exercise 17B Solution
EXERCISE 17B
OBJECTIVE QUESTIONS
Mark (√) against the correct answer in each of the following:
(1) The sum of all the angles of a quadrilateral is
Ans: (c) 360o
(2) The three angles of a quadrilateral are 80o, 70o and 120o. The fourth angle is
Ans: (c) 90o
Solution: We know that the sum of all angles of a quadrilateral is 360o
So, 360 – (80+70+120) = 360 – 270 = 90o
(3) The angles of a quadrilateral are in the ratio 3 : 4 : 5 : 6. The largest of these angles is
Ans: (c) 120o
Solution: We know that the sum of all angles of a quadrilateral is 360o
(4) A quadrilateral having one and only one pair of parallel is called
Ans: (d) A trapezium
(5) A quadrilateral whose opposite sides are parallel is called
Ans: (d) A parallelogram
(6) An isosceles trapezium has
Ans: (b) Equal nonparallel sides
(7) If the diagonals of a quadrilateral bisect each other at right angles, then this quadrilateral is
Ans: (b) A rhombus
(8) A square is
Ans: (b) All sides equal and diagonals equal
(9) A quadrilateral having two pairs of equal adjacent sides but unequal opposite sides, is called a
Ans: (c) Kite
(10) What do you mean by a regular quadrilateral?
Ans: (c) A square
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