These NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes Ex 5.8 Questions and Answers are prepared by our highly skilled subject experts.

## NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes Exercise 5.8

Question 1.

Examine whether the following are polygons. If anyone among them is not, say why?

Answer:

(a) As it is not a closed figure, therefore, it is not a polygon.

(b) It is a polygon because it is closed by line segments.

(c) It is not a polygon because it is not made by line segments.

(d) It is not a polygon because it not made only by line segments, it has curved surface also.

Question 2.

Name each polygon:

Answer:

(a) Quadrilateral

(b) Triangle

(c) A pentagon

(d) An octagon

Question 3.

Draw a rough sketch of a regular hexagon. Connecting any three of its vertices, draw a triangle. Identify the type of the triangle you have drawn.

Answer:

ABCDEF is a regular hexagon and triangle thus formed by joining AEF is an isosceles triangle.

Question 4.

Draw a rough sketch of a regular octagon. (Use squared paper if you wish). Draw a rectangle by joining exactly four of the vertices of the octagon.

Answre:

ABCDEFGEI is a regular octagon and CDGE1 is a rectangle.

Question 5.

A diagonal is a line segment that joins any two vertices of the polygon and is not a side of the polygon. Draw a rough sketch of a pentagon and draw its diagonals.

Answer:

ABCDE is the required pentagon and its diagonals are AD, AC, BE and BD.