Mathematics
Amit is designing a logo using geometric shapes. He draws:
(a) A closed curve with 4 straight sides
(b) A straight line that extends infinitely in both directions
(c) A shape that has a centre and all points on the boundary are at the same distance from it.
Answer the following questions:
(a) What is the name of the closed curve with 4 sides?
(b) What is the name of the second shape Amit drew?
(c) What is the third shape? What is the name of the line segment joining the centre to any point on the boundary?
Geometrical Concepts
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Answer
(a) A closed curve made up of 4 straight sides is a quadrilateral.
(b) A straight line that extends infinitely in both directions is called a line.
(c) A shape with a centre, where all points on the boundary are at the same distance from the centre, is a circle. The line segment joining the centre to any point on the boundary is called the radius.
Hence, (a) Quadrilateral, (b) Line, (c) Circle; the segment is the Radius.
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