Head First 2D Geometry

you are here 4 151

triangle properties

First we need to pick a venue

There are three local fields where this sort of event can take place,

and your choice of venue is absolutely critical. It determines how

many people can come to your festival and what it will cost to

make sure they all pay to get in.

Here are the three possible venues:

The three fields

are different

shapes and sizes.

What do you need to find out about each potential venue to

figure out the following? Just describe these in normal words—

don’t worry about geometry jargon.

a) The fencing costs:

b) The capacity:

We don’t want people

coming in for free!

The number of people who

can come to the festival

Field A

Field B

Field C

152 Chapter 4

permeter is the total length of sides

The perimeter is the total length of the sides of a shape

If you add up the lengths of all of the sides, or edges, of a

shape then you’ve got the perimeter. The exact calculation you

need to do depends on how many sides your shape has.

What do you need to find out about each potential venue to

figure out the following? Just describe these in normal words—

don’t worry about geometry jargon.

a) The fencing costs:

b) The capacity

we don’t want people

coming in for free!

number of people who can

come to the festival

The length of the edges

The area—how much ...