Respostas

2013-11-05T15:28:53-02:00
A(5,2) B(1,4) C(3-1)
AB² = (1-5)²+(4-2)²
AB² = 16+4
AB² = 20
AB = \/20
AB = 2\/5


BC² = (3-1)²+(-1-4)²
BC² = 4 + 25
BC² = 29
BC = \/29

AC² = AB²+BC²
AC² = 20+29
AC² = 49
AC = \/49
AC = 7

a.h = b.c
7h = \/29.\/20
7h = \/580
h = \/580/7