+0

# Geometry

+5
965
4
+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.

Dec 9, 2015

### Best Answer

#3
+109512
+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

Dec 10, 2015

### 4+0 Answers

#1
+8574
+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

Dec 9, 2015
#2
+111321
+5

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

Dec 9, 2015
#3
+109512
+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

Melody Dec 10, 2015
#4
+111321
0

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

Dec 10, 2015