# 1st Class Mathematics Geometrical Shapes Geometrical Shapes

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:

1. Straight lines 2. 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

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

•          Example:

Which one of the following options has two angles?

(a) (b) (c) (d) Explanation: Option (a) is correct because it has three lines meeting at two points making 2 angles.

Triangle

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

Explanation: Option (b) is correct because one square has  lines.

So $[\,4\,]+[\,4\,]=[\,8\,]$lines are required to make  squares.

#### Other Topics

##### 15 10

LIMITED OFFER HURRY UP! OFFER AVAILABLE ON ALL MATERIAL TILL TODAY ONLY!

You need to login to perform this action.
You will be redirected in 3 sec 