perpendicular and angle bisectors

[lostinspace]

needhelp plz!!!!!!!
having trouble with perpendicular and angle bisectors.
the perpendicular bisectors of (triangle symbol)rst intersect at k. find KR
help

 

[stapel]

Please provide a detailed description of the triangle, and the relationships between the points r, s, t, k, R, and K.

Thank you.

Eliz.

 

[Guest]

an easy way to find if the lines or angles are perpendicular are if they form right angles.

 

[Gene]

I don't care what it looks like. I'll put r at (0,0)
s is at (s_x,s_y)
t is at (t_x,t_y)
The slope of rs is
s_y/s_x
Its center is at (s_x/2,s_y/2)
The equation of the perp-bis is
y=s_x/s_y(x-s_x/2)+s_y/2
Do the same for rt
Solve for the intersection (k_x,k_y).
rk = sqrt(k_x² +k_y²)

BTW K & R are different variables than k & r but I doubt if you used them that way :evil: