Question

Znajdź środki:
A=(-5,4) B=(3,-1)
A=(8,-1) B=(4,6)
A=(-3,5) B=(4,8)

Answer 1

Odpowiedź:

1.

A =( - 5 , 4 ) , B = (3 , - 1 ) , S - współrzędne środka = (xs , ys)

xa = - 5 , xb = 3 , ya = 4 , yb = - 1

xs = (xa + xb)/2 = (- 5 + 3)/2 = - 2/2 = - 1

ys = (ya + yb)/2 = (4 - 1)/2 = 3/2 = 1 1/2

S = (- 1 , 1 1/2 )

2.

A = (8 , - 1 ) , B = (4 , 6 ) , S = (xs , ys)

xa = 8 , xb = 4 , ya = - 1 , yb = 6

xs = (xa + xb)/2 = (8 + 4)/2 = 12/02 = 6

ys = (ya + yb)/2 = (- 1 + 6)/2 = 5/2 = 2 1/2

S = (6 , 2 1/2 )

3.

A = (- 3 , 5 ) , B = (4 , 8 ) , S = (xs , ys)

xa = - 3 , xb = 4 , ya = 5 , yb = 8

xs = (xa + xb)/2 = (- 3 + 4)/2 = 1/2

ys = (ya + yb)/2 = (5 + 8)/2 = 13/2 = 6 1/2

S = (1/2 , 6 1/2 )