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# Area of a triangle question watch

1. Three points

0,0 22,0 4,12

They make up a triangle the area of the traingle is = 1/2 * 12 * 22

Why is this and why can't you use the 4 instead of the 12?
2. Draw a sketch. The area of a triangle is half the base multiplied by the perpendicular height.

The height is the y value.
3. (Original post by IShouldBeRevising_)
Three points

0,0 22,0 4,12

They make up a triangle the area of the traingle is = 1/2 * 12 * 22

Why is this and why can't you use the 4 instead of the 12?
If you plot the triangle on a set of axis, you'll find the base is on the x axis, since area = 1/2 x base x height, the height is 12 not four as 12 is y coordinate
4. If you take (0,0) and (22, 0) to be the base, then the perpendicular co-ordinate will be parallel to the y-axis. Have you tried a sketch?
5. if you sketch the triangle you will find that the horizontal base is 22, the vertical height is 12.
6. (Original post by Mr M)
sketch
(Original post by raiden95)
plot
(Original post by Savvy Sage)
sketch
(Original post by the bear)
sketch
A theme appears to be emerging ...
7. (Original post by Mr M)
A theme appears to be emerging ...
Damn it I'm the odd one out

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