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

Class 6 Maths Chapter 5 Understanding Elementary Shapes Ex 5.8 Ncert Solutions Class 6 Maths Chapter 5 Exercise 5.8 Ncert Solutions For Class 6 Maths Chapter 5 Exercise 5.8 Ncert Class 6 Maths Chapter 5 Exercise 5.8 Class 6 Maths Ch 5 Ex 5.8 Ncert Maths Class 6 Chapter 5 Exercise 5.8

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

Question 1.
Examine whether the following are polygons. If anyone among them is not, say why?

Solution :
(a) is not a closed figure and hence is not a polygon.
(b) is a polygon of six sides.
(c) is not a polygon since it is not made of line segments.
(d) is not a polygon since it is not made of line segments.

Question 2.
Name each polygon:

Make two more examples of each of these.
Solution :
(a) A Quadrilateral
(b) A Triangle
(c) A Pentagon (5-sided)
(d) An Octagon (8-sided).

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.
Solution :

The triangle ABC drawn is an obtuse-angled 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.
Solution :

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.
Solution :

Question 1

Identify the type of angle: 45°

Solution

Since:

45∘<90∘45^\circ < 90^\circ45∘<90∘

It is an acute angle.

Answer:

$AcuteAngle$

Question 2

Identify the type of angle: 90°

Solution

90∘90^\circ90∘

It is a right angle.

Answer:

$RightAngle$

Question 3

Identify the type of angle: 120°

Solution

Since:

90∘<120∘<180∘90^\circ < 120^\circ < 180^\circ90∘<120∘<180∘

It is an obtuse angle.

Answer:

$ObtuseAngle$

Question 4

Identify the type of angle: 180°

Solution

180∘180^\circ180∘

It is a straight angle.

Answer:

$StraightAngle$

Question 5

Compare: 60° and 110°

Solution

60∘<110∘60^\circ < 110^\circ60∘<110∘

So 110° is greater.

Answer:

110∘110^\circ110∘