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

Question 1.
Draw the diagonals for the given rectangle.

Answer:

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

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

Question 1.
Opposite sides are equal.
Answer:

Question 2.
There are no sides and corners.
Answer:

Question 3.
Sides may or may not be equal.
Answer:

Question 4.
All the four sides are equal.
Answer:

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.

Answer:

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

Answer:

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

Answer:

Question 2.
A tangram boat

Answer:

Question 3.
A tangram swan

Answer:

Tessellation (Text Book Page No. 8):

Question 1.
Complete the shapes by filling the tiles.

(i)

Answer:

(ii)

Answer:

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

i)

Answer:

ii)

Answer:

iii)

Answer: