Question

Help please.

Answer 1

...which one?

Answer 2

I'm trying to find out if my answers are right.

Answer 3

use the distance formula for 2. looks right

Answer 4

So 2 is right, what about 1?

Answer 5

I'm not sure about the first. It's definitely not isosceles or right.

Answer 6

Ok thank you.

Answer 7

Could you check these for me?

Answer 8

If c^2 = a^2+b^2, the triangle is right
---
If c^2 > a^2 + b^2, the triangle is obtuse
---
If c^2 < a^2 + b^2, the triangle is acute.
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Answer 9

looks like
\(
c^2=324
\\
a^2+b^2=196+256=452\)

looks acute