Geometrical Shapes

**Category : **1st Class

**Geometrical Shapes**

**Geometrical Shapes **

In this chapter, we will know about the basic geometrical shapes, which we often see around us.

**Line**

A line is a collection of points. The lines may be straight or curved.

See the picture of lines given below:

**Straight lines**

**Curved lines**

**Angles**

When two lines meet at a point, an angle is formed.

See the following figures:

(i) (ii)

These are angles.

**Example:**

** **

Which one of the following is not an angle?

(a) (b)

(c) (d)

(e) None of these

Answer (d)

**Explanation:** Option (d) is correct because in (d), two lines do not meet to make an angle.

**Triangle**

A triangle has three sides and three angles. Let's see the following figures:

**Quadrilateral**

Quadrilateral has four sides and four angles. Let's see the following figures:

Thus it is clear that a quadrilateral has four sides whether they are equal or not.

** **

**Rectangle**

A rectangle has equal angles and equal opposite sides. Let's see the following rectangles:

**Square**

Square has 4 equal sides and 4 angles. Let's see the squares given below:

**Rhombus**

Rhombus is a quadrilateral in which all four sides are equal. Let's see the pictures of rhombus given below.

**Example:**

** **

How many lines are required to make 2 square?

(a) 4 (b) 8

(c) 12 (d) 3

(e) None of these

Answer (b)

** Explanation:** Option (b) is correct because one square has 4 lines. So 4 + 4 = 8 lines are required to make 2 squares.

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