what is the distance formula for geometry?

Question

this is what is says in my book:
use the distance formula and the SSS Congruence Postulate to show that ABC is congruent to DEF

Answer 1

d = √[ (x' - x)² + (y' - y)² ]

Answer 2

Distance Formula Geometry

Answer 3

I think you are looking for that formula that is a form of the Pythagorean theorem which gives the distance between two points on a graph. This looks hard, but is just another way to solve a² + b² = c²

√{(x" - x')² + (y" - y')²} = distance between these two points.
A example that uses this would be :
Find the distance between (3 , 5) and (6 , 9)
√{(6 - 3)² + (9 - 5)²}
= √{(3)² + (4)²}
= √{(9) + (16)}
= √(25)
= 5 -- the diagonal (shortest) distance between the two points

Answer 4

In plane geometry the distance between two points (x1,y1) and (x2,y2) is sqrt((x2-x1)^2 +(y2-y1)^2).

In solid geometry the distance between two points (x1,y1,z1) and (x2,y2,z2) is sqrt((x2-x1)^2+(y2-y1)^2+(z2-z1)^2)

Answer 5

I used it in algebra. I can't BELIEVE I forgot it!!! I was an A+ student!!!

Answer 6

ok well i cant copy and paste put here it is hope it helps you

http://regentsprep.org/Regents/math/distance/Ldistance.htm

Answer 7

location of point b - location of point a

Answer 8

i don't have all the math symbols for it on my keyboard, so go to this site.

http://www.teacherschoice.com.au/Maths_Library/Analytical%20Geometry/Alg_15.htm

have fun!!

Answer 9

you've got to be more specific... there's just rate/time

Answer 10

i just had geo. but i cant remember...

Answer 11

haha.. you should know that