+0  
 
+5
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avatar+150 

A tile company produces a tile in the shape of a regular polygon. If each interior angle has a measure that is three times an exterior angle measure, identify the regular polygon. If one side of a tile has a length of 2.3 cm, find the perimeter of a tile.

Anima  Dec 9, 2015

Best Answer 

 #3
avatar+91045 
+10

This is what Hayley is talking about.

And, I am with CPhill - that was a top answer Hayley.

 

The program we use to draw pictures like this is called GeoGebra.  It is a download.  

It is commonly used by schools so you can probably get permission to download it.

Anyone who has an interest in drawing maths 'pics' should download it (for free) and have a play :)

 

AND that is the first time I have tried Alan's method of uplading a tiny pic image.

It was a bit slower but I guess I will get faster at it.   :D

Thanks Alan   laugh

Melody  Dec 10, 2015
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4+0 Answers

 #1
avatar+8621 
+15

let exterior = x 
therefore interior = 3x 

3x + x = 180 
4x=180 
x = 45 degrees 

exterior angle * # of sides = 360 
# of sides = 360/45 
# of sides = 8 hence an octagon 

perimeter = 8 * length of side 
= 8*2.3 
= 18.4cm

Hayley1  Dec 9, 2015
 #2
avatar+78744 
+5

Very impressive, Hayley.......a BIG 5 points from me........

 

 

cool cool cool

CPhill  Dec 9, 2015
 #3
avatar+91045 
+10
Best Answer

This is what Hayley is talking about.

And, I am with CPhill - that was a top answer Hayley.

 

The program we use to draw pictures like this is called GeoGebra.  It is a download.  

It is commonly used by schools so you can probably get permission to download it.

Anyone who has an interest in drawing maths 'pics' should download it (for free) and have a play :)

 

AND that is the first time I have tried Alan's method of uplading a tiny pic image.

It was a bit slower but I guess I will get faster at it.   :D

Thanks Alan   laugh

Melody  Dec 10, 2015
 #4
avatar+78744 
0

Very nice, Melody.......how did you manage to draw that octagon in GeoGebra????

 

 

 

cool cool cool

CPhill  Dec 10, 2015

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