A (-7,9) B(-7,4) C(-2,7)
1.The perimeter of Figure ABC is ___ units
D(3,7) E(6,3) F(9,6) G(8,9)
2. The perimeter of Figure DEFG is ___ units
H(-7,-7) I(-4,-7) J(-2,-5) K(3,-7) L(3,-4) M(-5,-2)
3. The perimeter of Figure HIJKLM is ___ units
2006-09-18 20:58:54 · 4 answers · asked by Brimm4yourbody@yahoo.com 1 in Science & Mathematics ➔ Mathematics
Use the distance formula.
2006-09-18 23:24:42 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The distance "AB" between two points A (x1,y1) and B (x2,y2) is
AB = â[(x1 - x2)² + (y1 - y2)²]
To get the perimeter of ABC, just add AB + BC + CA.
To get the perimeter of DEFG, just add DE + EF + FG + GD.
To get the perimeter of HIJKLM, just add HI + IJ + JK + KL + LM + MH.
You can do the maths... It is very tedious...
^_^
2006-09-19 07:38:53 · answer #2 · answered by kevin! 5 · 0⤊ 0⤋
Yes. go with the distance formula. It's your only hope, Obi-Wan.
2006-09-19 04:03:33 · answer #3 · answered by Jim T 6 · 0⤊ 0⤋
d = sqrt [ ( x2 - x1 ) ^ 2 + ( y2 - y1 ) ^ 2 ]
Plug in and add the distances, but don't cheat on your homework!
2006-09-19 04:11:30 · answer #4 · answered by Joatmon 2 · 0⤊ 0⤋