# Geometrical shapesPage 1

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Slide 1 Subject - Mathematics

Unit - Geometry

Topic - Geometrical shapes

School – Army School Roorkee

Prepared by Mrs. Ranjana

Slide 2 ## Major Concepts

Develop understanding and appreciation of geometrical shapes and their characteristic.

Develop and exhibit creativity.

Develop power of thinking and reasoning.

Develop scientific temper.

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Slide 3 ## Minor Concepts

Students will be able to recognized different geometrical shapes.

Students will be able to relate various shapes like that of bangle, cart,cone,box etc with circle,triangle,quadrilateral etc.

Slide 4 Contents

Quiz

Slide 5 Contents:

Polygon

Triangle

Circle : Parts of a circle

Diameter

Chord

Circumference

Slide 6 ## Polygon

A simple closed figures by joining three or more line segments is called polygon

Lets study about types of polygons

Slide 7 ## Triangle

It is a closed figure formed by joining three line segments . So , a triangle is a polygon . Different shapes of triangle are shown below:

The three line segments which form the triangle are called its sides .

Slide 8 It is a closed figure formed by joining four line segments called quadrilateral. So quadrilateral is a polygon. Different shapes of quadrilateral are shown below:

The four line segments which form a quadrilateral are called its sides.

Slide 9 ## Circle

A closed curve formed in such a way that any point on this curve is equidistant from a fixed point which is in the interior of the curve.

A

D

O

OA = OB = OC = OD

o

B

C

Slide 10 ## Parts of a circle

Center

Diameter

Chord

Circumference

Slide 11 ## Center

A fixed point in the interior of circle whose distance from all the points on the circle is same.

A

B

C

D

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