Punjab State Board PSEB 6th Class Maths Book Solutions Chapter 9 Understanding Elementary Shapes Ex 9.5 Textbook Exercise Questions and Answers.
PSEB Solutions for Class 6 Maths Chapter 9 Understanding Elementary Shapes Ex 9.5
1. Which of the following are polygons and there is no polygon. Give the reason:
(i) It is not a closed figure. Therefore it is not a polygon.
(ii) It is made up of lines segment. Therefore it is polygon.
(iii) It is not a polygon, because it is not made of line segments.
(iv) It is not closed by line segment. Therefore, it is not a polygon.
(v) It is not polygon because line segments are intersecting each other.
(vi) It is made up of line segments, therefore it is a polygon.
2. Classify the following as concave or convex polygons:
(i) Concave Polygon
(ii) Convex Polygon
(iii) Concave Polygon
(iv) Concave Polygon
(v) Convex Polygon
(vi) Convex Polygon.
3. Tick in the boxes, if the property holds true for a particular quadrilateral otherwise eroes out ‘x’:
|All sides are equal|
|Only opposite sides are equal|
|Diagonals are equal|
|Diagonals bisect each other|
|Diagonals are perpendicular to each other|
|Each angle is 90°|
|All sides are equal||×||×||√||×||√|
|Only opposite sides are equal||√||√||×||×||×|
|Diagonals are equal||√||×||×||×||√|
|Diagonals bisect each other||√||√||√||×||√|
|Diagonals are perpendicular to each other||×||×||√||×||√|
|Each angle is 90°||√||×||X||×||√|
4. Fill in the blanks:
…………… is a quadrilateral with only one pair of opposite sides parallel.
…………….. is a quadrilateral with all sides equal and diagonals of equal length.
A polygon with atleast one angle is reflex is called ……………….. .
………….. is a regular quadrilateral.
…………… is a quadrilateral with opposite sides equal and diagonals of unequal length.
5. State True or False:
A rectangle is always a rhombus.
The diagonals of a rectangle are perpendicular to each other.
A square is a parallelogram.
A trapezium is a parallelogram.
Opposite sides of a parallelogram are parallel.