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# Polygons

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by

## Mahitha J

on 18 January 2013

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#### Transcript of Polygons

Polygons By:Mahitha Jangeti Triangles continued....... This Prezi will teach you about polygons!!!!!! Triangles The triangle in that picture has 3 acute angles. This is a scalene triangle becuase it has no equal sides. Acute Angle Acute Angle Acute Angle NO EQUAL SIDES This is a equalateral triangle beacause all of its sides are the same size. EQUAL SIDES This is a isoceles triangle becuase it has 2 equal sids and angles. 2 EQUAL SIDES Squares This object has a square in it which has 4 equal sides and angles. square In this image there is a rectangle which has 4 sides with 2 sets of parallel sides. rectangle 2 sets of parallel lines This is a non-square rhombus with 2 sets of parallel lines. This particular sandwhich has one right angle on the botttom left corner right angle This particular window is a trapezoid which is a irregular quadrilateral. Trapezoid obtuse angle obtuse triangle 2 sets of parallel lines Pentagon This is a pentagon which has five sides and they are all congruent. all congruent sides This is an irregular pentagon which has all equal sides, but still has five sides. Not all equal sides Hexagon This is a hexagon with 6 equal sides. This is a irregular hexagon, because it has 6 non equal sides. 1 2 3 4 5 6 irregular hexagon six equal sides Octagon This is an octagon dome with eight equal sides. Equal eight sided octagon This is an irregular octagon, becuase it doesn't have all equal sides, but it still has eight sides. irregular octagon Angle sums Triangle- 180 degrees
Sqaure-360 degrees
Pentagon-540 degrees
Hexagon-720 degrees
Octagon-1080 degrees
Decagon-1440 degrees
To get an angle sum you have to take the number of sides and subract it by two then multiply that by 180. Decagon This is a irregular decagon, because it does not have all equal sides. This is a regular decagon, becuase it has all equal sides. decagon 1 2 3 4 5 6 7 8 9 10 :) Thank You For Watching Hope You Learned Something!!!!! This is the White House.As
you can see there is an obtuse triangle on the top of the building. This triangle has one obtuse angle. Quadrilaterals A triangle has 3 verticies A quadrilateral has four verticies A pentagon has 5 verticies A hexagon has 6 verticies A octagon has 8 verticies A decagon has 10 verticies A triangle has 3 sides Has 10 sides
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