Question

1. (0, -1), (2, -1), (2, -5) A) obtuse scalene
2.(2, 2), (6, 2), (4, 5) B) acute isosceles
3.(1, -2), (3, -2), (6, -5) C) right scalene
4.(7, 0), (7, -4), (3, -4) D) right isosceles

Answer 1

Match the vertices of each triangle with its classification.

Answer 2

use the distance formula for each set of points (three times). this will give u valuable information. then u can use:
pythagora's theorem
cosines theorem
sines theorem

Answer 3

Nevermind... You took to long! =)