Plane Shapes

A plane shape is a figure made up of straight or curved lines. Two straight lines where they meet is called the corner. The straight lines which form a plane shape are called its sides. Some basic shapes are given below.

We already know about squares, rectangles, triangles, circles, ovals.

These are called flat shapes or plane shapes. 

These shapes can be drawn on a sheet of paper. These are called plane shapes or Two-Dimensional (2-D) Shapes.

Let us learn more about them.

Square

A square has 4 sides and 4 corners. All sides are of equal length.

Rectangle

A rectangle has 4 sides and 4 corners. The opposite sides are of equal length.

Triangle

A triangle has 3 sides and 3 corners. The three sides of a triangle can be of same length or of different lengths.

Circle

A circle has 1 curved side 0 corners.

Oval

An circle has 1 curved side 0 corners.

Drawing Shapes:

Plane figures can be drawn on a paper.

These shapes can be the face of a solid. Let us see, how?

Take a book, place it on a sheet of paper. Trace around it with a pencil.

The shape you get is a rectangle.

A rectangle is the outline of a face of a cuboid.

Take a dice. Place it on a sheet of paper. Trace around its edges as shown in the picture.

The shape you get is a square.

Similarly, 

Place a cube on a blank page of your notebook. Start moving the sharp end of a pencil along the base of the cube till you reach back to the starting point.

Remove the cube. See what shape is formed. Oh! Yes it is a square.

Take a bangle. Place it on a sheet of paper. Trace around its edge as shown in the picture. The shape you get is a circle.

Take a square sheet of paper. Fold it from one corner as shown in the picture. Draw along the sides with a pencil.

Similarly, now look at the solid shape.

Now look at this solid shape. Name this shape? Oh! Yes, it is a cylinder.

By moving a sharp pencil along the base of the cylinder, what shape do you get?

Oh! Yes, it is a circle. A circle has only one round edge.

A circle can be formed by tracing the base of a cone also.

The shape you get is a triangle.

Questions and Answers on Plane Shapes:

1. Identify the following shapes and fill in the blanks.

(i)		(ii)
(iii)		(iv)

2. Count and colour the shapes.

3. Identify and tick (✔) the shapes of the following objects.

(i)

Cube/Sphere/Cone

(ii)

Cylinder/Cuboid/Sphere

(iii)

Cuboid/ Cylinder/Cube

(iv)

Sphere/Cube/Cone

(v)

Cones/Sphere/Cuboid

(vi)

Cylinder/Cone/Sphere

4. Complete the following sentences.

(i) A wheel is shaped like a __________ .

(ii) A pizza slice is like a __________ .

(iii) A shape with all four sides same is a __________ .

(iv) A red stop sign on the road is like a __________ .

(v) Pages of a book are like a __________ .

     Its opposite sides are __________ .

     It has corners __________ .

Answer:

4. (i) circle

(ii) triangle

(iii) square

(iv) circle

(v) rectangle; same; four

5. Count and write the number of various shapes.

6. Name different shapes in this picture (as done for one).

7. Write the properties of each shape.

(i) Square

___________________________________________

____________________________________________

(ii) Rectangle

___________________________________________

____________________________________________

(iii) Triangle

___________________________________________

____________________________________________

(iv) Circle

___________________________________________

____________________________________________

2nd Grade Math Practice

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