Question

Which expression gives the area of the triangle shown below?
A. (1/2 c)(1/2 x)
B. 1/2cx
C. 1/2ac
D. (1/2 a)(1/2 c)

Answer 1

What is the formula for the area of a triangle?

Answer 2

not sure

Answer 3

pythagreom theorem?

Answer 4

The area of a triangle is the base times the height divided by 2.

Answer 5

wait
1/2=bh

Answer 6

It is often written as:
A = bh/2

Answer 7

oh ok

Answer 8

Ok so far?

Answer 9

yes

Answer 10

This means that to find the area you need a base and a height.
That means we need to be able to answer the question:
What is a base and what is a height of a triangle?

Answer 11

we know x is the height

Answer 12

and c is base

Answer 13

am i right?

Answer 14

Yes, you are.

Answer 15

ok so far so good then

Answer 16

Since you know what the base and height are, just replace them in the formula
A = bh/2
Write c for b, and x for h. What do you get?

Answer 17

1/2cx?

Answer 18

That's it. Good job.

Answer 19

THANKS!

Answer 20

You're welcome.