Samacheer Kalvi 3rd Standard Maths Book Solutions Term 3 Chapter 1 Geometry

Question 1.
Draw the diagonals for the given rectangle.

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 1

Answer:

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 2

Question 2.
How many diagonals will be there in a cuboid?
Answer:
16

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry

Match the properties of 2D shapes by observing their sides and corners (vertices).

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 3

Question 1.
Opposite sides are equal.
Answer:
Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 25

Question 2.
There are no sides and corners.
Answer:
Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 28

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry

Question 3.
Sides may or may not be equal.
Answer:
Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 27

Question 4.
All the four sides are equal.
Answer:
Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 26

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry

Properties of 3D Objects:

Question 1.
Pick out the shapes with (i) curved surfaces (ii) flat surfaces (iii) curved and flat surfaces from the given picture and completed table.

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 4

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 5

Answer:

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 6

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry

Question 2.
Complete the table by counting the sides, corners and diagonals of the given 3D shapes.

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 7

Answer:

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 8

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry

Tangrams (Text Book Page No. 7):

Identify the tangram pieces used in the given images by colouring and numbering the pieces as in the reference figure.

Question 1.
A tangram house

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 9

Answer:

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 10

Question 2.
A tangram boat

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 11

Answer:

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 12

Question 3.
A tangram swan

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 13

Answer:

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 14

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry

Tessellation (Text Book Page No. 8):

Question 1.
Complete the shapes by filling the tiles.

(i) Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 15

Answer:

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 16

(ii) Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 17

Answer:

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 18

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry

Question 2.
Draw one more tile to continue the pattern.

i) Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 19

Answer:

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 20

ii) Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 21

Answer:

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 22

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry

iii) Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 23

Answer:

Samacheer Kalvi 3rd Standard Maths Guide Term 3 Chapter 1 Geometry 24

Samacheer Kalvi 3rd Standard Maths Guide