Whats the area of this triangle?

Question

anonymous · Answer

attachment

anonymous · Answer

i know the length of the sides, what else do i need?

anonymous · Answer

1/2 x b x h = A but which side is the base and which one is the height

anonymous · Answer

sorry if thats a stupid question

jdoe0001 · Answer

notice something   teh points (-5, 5)   and (10,10)

that indicates a line y = x  |dw:1412890138681:dw|    so that means that those 2 lines are perpendicular to one another
so is a right triangle

you could picke either of the "non-slanted" lines as base if you wish, and the other will become the height, and the formula will work just the same

anonymous · Answer

so 1/2 x AC x AB would be fine?

anonymous · Answer

exactly,
as shown above it is a right triangle (one 90 degree angle), you can pick which is the "base" and "height" . so if you know the lengths of AC and AB, you just use that formula

anonymous · Answer

yes i know the lengths, thank you!! :)

anonymous · Answer

and the answer is 50, just so you can check yourself

anonymous · Answer

aha! thanks!