Prove that triangle ABC is Isosceles, given the following points. A (3, -1)

B (9, 2)

C (6, -4)

See below

Step-by-step explanation:

Given points:

First, plot the points on the coordinate plane (see attached)

We see that AB and BC look the same. Let's find their length:

We showed that AB = BC = 3√5, so the triangle has two sided of the same length, therefore is isosceles.

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24

probably .5

i can on others if necessary.