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:
Angles
When two lines meet at a point, an angle is formed.
See the following figures:
(i) (ii)
These are angles.
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.
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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