polygons (15-5-20)
GOOD MORNING BOYS
Today we will learn about 'Polygons' using a couple of short videos. These videos are simple to follow and explain the concept so beautifully that you will be able to do all your sums without asking anyone!!!!
What are Polygons?
This is a short video that will answer this question. Go ahead and enjoy learning by yourself.
- A Polygon is a closed figure made up of lines segments (not curves) in two-dimensions.
- A minimum of three line segments are required for making a closed figure, thus a polygon with a minimum of three sides is known as Triangle.

Depending on the sides and angles, the polygons are classified into different types, namely
- Regular Polygon
- Irregular Polygon
- Convex Polygon
- Concave polygon
Regular Polygon
If all the sides and interior angles of the polygon are equal, then it is known as a regular polygon.
Another short video for you to understand even better what are regular polygons?
Irregular Polygon
If all the sides and the interior angles of the polygon are of different measure, then it is known as an irregular polygon.
Convex Polygon
If all the interior angles of a polygon are strictly less than 180 degrees, then it is known as a convex polygon. The vertex will point outwards from the centre of the shape.
Concave Polygon
If one or more interior angles of a polygon are more than 180 degrees, then it is known as a concave polygon. A concave polygon can have at least four sides. The vertex points towards inside of the polygon.
This is a wonderful video that will explain convex and concave polygons.
QUADRILATERAL
sides, vertices, adjacent and opposite sides and angles of a quadrilateral.
ABCD is a quadrilateral with four sides namely AB, BC, CD and DA.
It has four vertices namely A, B, C and D
A line segment joining a pair of opposite vertices is called a DIAGONAL. So, there are two diagonals namely AC and BD.
- sides
- vertices
- diagonals
- opposite sides
- adjacent sides
- angles
[I want you post the answers in the comments box]

Good morning ma’am
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6 C
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ReplyDeleteMa’am the answers are :
ReplyDeletesides - AB, BC, CD , DE , EF , FA
vertices - A , B, C , D , E and F
diagonals- AD , FC
opposite sides- BC and FE , AB and ED , AF and CD
adjacent sides - AB - BC, CD - DE, DE-EF , EF- FA, FA - AB
angles- <ABC,<BCD,<CDE,<DEF,<EFA and <FAB
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6C
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ReplyDeletesides - AB, BC, CD , DE , EF , FA
ReplyDeletevertices - A , B, C , D , E and F
diagonals- AD , FC
opposite sides- BC and FE , AB and ED , AF and CD
adjacent sides - AB - BC, CD - DE, DE-EF , EF- FA, FA - AB
angles- <ABC,<BCD,<CDE,<DEF,<EFA and <FAB
Rudrapriyam
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ReplyDeleteAns:
ReplyDeleteSide= AB,BC,CD,DE,EF,FA
Vertices=A,B,C,D,E and F
Diagonal=AD,BE,CF
Opposite side= BC and FE,AB and ED, AF and CD
Adjacent side= AB-BC,CD-DE,DE-EF,EF-FA,FA-AB
Angles=<ABC,<BCD,<CDE,<DEF,<EFA and <FAB
-Abhav Singh Rawat
Ma'am the answers are :
ReplyDeleteSIDES - AB , BC , CD , DE , EF , FA
VERTICES - A B C D E and F
DIAGONALS - AD , FC
OPPOSITE SIDES - BC and FE , AB and ED , AF and CD
ADJACENT SIDES - AB , BC CD DE DE-EF EF -FA FA- AB
ANGLES-<ABC , <BCD , <CDE , <DEF , <EFA , <FAB
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