Question

Fan&Medal... Can someone check my answer?

Determine if triangle ABC with coordinates A (−1, 1), B (1, −1), and C (3, 3) is an isosceles triangle. Use evidence to support your claim. If it is not an isosceles triangle, what changes can be made to make it isosceles? Be specific.

Answer 1

You can use the distance formula to find out the lengths of all three sides. If two of the sides are the same, the triangle will be an isosceles.

AC
d=(x2-x1)^2 +(y2-y1)^2

d=(3+1)^2+(3-1)^2

d=(4)^2+(2)^2

d=(16)+(4)=sqrt20
-----------------------
AB
d=(1+1)^2 + (-1-1)^2

d=(2)^2+(-2)^2

d=(4)+(4)=sqrt8
-----------------------
BC
d=(3-1)^2+(3+1)^2

d=(2)^2+(4)^2

d=(4)+(16)=sqrt20

So yes, this triangle is an isosceles triangle because two of the sides equal 20.

Answer 2

thumbs up !!!! @hanner_B_nanner

Answer 3

u there ???? @hanner_B_nanner

Answer 4

yesss!! Thank you!!!! :D

Answer 5

u r welcome .... @hanner_B_nanner