Grade 1 Math Shapes

Shapes

What is plane shape?

If a shape is flat and closed and has no thickness, then it is called plane shape.

Example:

i. Square:

 ⬜

Square has 4 sides, 4 corners and each side is equal in length.

ii. Rectangle:

▭

Rectangle has 4 sides, 4 corners and its opposite sides are equal in length.

iii. Triangle:

△

Triangle has 3 sides, 3 corners and its all sides may be or may not be equal in length.  

iv. Circle:

⚪

Circle has no side, no corner but it has figure of a curved line.

What is Solid shape?

A shape which has tree dimensions: length, width and height is called a solid shape.

Example:

i. Cube:

A cube has 6 square faces and 12 edges and 8 corners.

ii. Cuboid:

A cuboid has 6 rectangular faces and 12 edges and 8 corners.

iii. Cone:

A cone has one flat face and a curved face.

iv. Cylinder:

A cylinder has two flat faces and one curved face and has no corners.

v. Sphere:

A sphere has no flat faces and corners, has only a curved face.

1. I have four sides and I am a plane shape. Who I am?

(a) Square

(b) Rectangle

(c) both

Answer: c

2. I have 3 sides and 3 corners. I am a _________.

Answer: triangle.

3. It has no sides, no corner but has a curve line. It is a ______.

Answer: circle.

4. What is the meaning of 3D in solid shape?

Answer: 3D means 3 dimensions in solid shape.

 

5. What is the name of 3 dimensions?

Answer: length, width and height.

6. What is the difference between cube and cuboid?

Answer:

Cube has 6 squire faces but cuboid has 6 rectangular faces.

7. A ______ has one flat face and a curved face.

Answer: Cone.

8. A cylinder has ______ flat faces and _______ curved face and has no corners.

Answer: 2, 1