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This figuire is also a tesselation. A tesselation is a shape with no gaps. Regular or Irregular. Coming Attractions:. hexagon. regular. If its regular then it fits together with no gaps. Parallel lines. Right know we have to find the sum of the angles. - PowerPoint PPT Presentation
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Coming Attractions:
hexagon
regular
This figuire is also a tesselation.
If its regular then it fits together with no gaps.
A tesselation is a shape with no gaps.
9 pairs of parallel lines
This is a pair of parallel lines. Parallel
lines are lines that seem to never touch.
These are all the pairs of parallel lines.
One figure has 3 pairs of parallel
lines.
So that means that the other 2 hexagons
have 3 pairs of parallel
lines.
Right know we have to find the
sum of the angles.
3 sides – 2 = 1 x 180= 180
4 sides – 2 = 2 x 180= 360
5 sides – 2 = 3 x 180= 540
360
pentagon
6 hexagon
77 900
octagon8
99 1260
10 decagon 1440
540
Rectangle has 2 triangles in it.
1
2
Pentagon has 3 triangles in it.
1
2 3
hexagon has 4 triangles in it.
3
21
4
heptagon has 5 triangles in it.
1
2
3
45
Rectangle has 2 triangles in it.
180
180
Pentagon has 3 triangles in it.
180
180 180
hexagon has 4 triangles in it.
180
180180
180
heptagon has 5 triangles in it.
180
180
180
180180
The sum of
the angles is 360.
The sum of the
angle is 540.
The sum of
this angle is
710.
The sum of this
angle is 890.
3 sides – 2 = 1 x 180= 180
4 sides – 2 = 2 x 180= 360
5 sides – 2 = 3 x 180= 540540
10. What would be the sum of the angles in a 52 sided polygon?
pentagon
6 hexagon
77 900
octagon
decagon
8
99 1260
10 1440
45 50 ?????
A straight line is always 180.
Whatever you have on the sides of the angle you subtract by 180.
180 – 45 = 135 – 50 = 85
The degree of this angle is 85.
85
4. What is the reflex of this angle? ____________________
http://www.youtube.com/watch?v=hrMT2A78Db8
Use auto shapes to draw a tessellation below
This illustration is a tessellation because……. It is a picture with no gaps.
Explain how you found your answer to the 150-sided figure. How do you know that your answer is correct?
A tesselation is a pair of shapes with no gaps.
This tessalation is made out of hexagons.
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