RS Aggarwal Solutions for Class 6 Chapter 13 Angles and Their Measurement

Question 1. A quadrilateral having one and only pair of parallel side is called
Answer: A Trapezium

Exam Tip: Remember that a trapezium is defined by having exactly one pair of parallel sides - this is the key distinguishing feature from other quadrilaterals.

Question 2. A quadrilateral whose opposite sides are parallel is called
Answer: Parallelogram

Exam Tip: When both pairs of opposite sides are parallel, the quadrilateral is a parallelogram - this is a fundamental property to identify this shape.

Question 3. A quadrilateral having all sides equal is a
Answer: Rhombus

Exam Tip: A rhombus has all four sides of equal length; if additionally all angles become right angles, then it becomes a square.

Question 4. A quadrilateral whose each angle is a right angle is a
Answer: Rectangle

Exam Tip: A rectangle has all angles equal to 90 degrees; however, a square also satisfies this condition, so ensure you remember that equal sides are the additional requirement for a square.

Question 5. A quadrilateral whose each angle is a right angle and whose all sides are equal is a
Answer: Square

Exam Tip: A square combines two properties - all angles are right angles and all sides are equal - making it the most special type of rectangle.

Question 6. A quadrilateral having two pairs of equal adjacent sides but unequal opposite sides is called a
Answer: Kite

Exam Tip: A kite's defining characteristic is two consecutive pairs of equal sides with unequal opposite sides - visualize the shape of an actual kite to remember this pattern.

Question 7. The diagonals of a quadrilateral bisect each other. This quadrilateral is a
Answer: Rectangle

Exam Tip: When diagonals bisect one another, you know it is a parallelogram; a rectangle is a special case of parallelogram, so this answer is correct.

Question 8. If the diagonals of a quadrilateral bisects each other at a right angle, then the quadrilateral is a
Answer: Rhombus

Exam Tip: Diagonals that bisect each other at 90 degrees is the key property of a rhombus - this perpendicular intersection distinguishes it from other parallelograms.

Question 9. An isosceles trapezium has
Answer: Non-parallel sides that are equal

Exam Tip: In an isosceles trapezium, the two legs (non-parallel sides) are equal in length - this is the distinguishing feature that makes it "isosceles."