AB = 10
CD = 8
M - śr. boku
Oblicz AM = ?
P = 1/2 * |AB| * |CD| = 1/2 * 10 * 8 = 40
|CB| = x
P = 1/2 * |AM| * |CB|
40 = 1/2 * 10 * x
40 = 5 * x
x = 40 : 5
x = 8
|AB|² = |AM|² + (1/2|CB|)²
10² = |AM|² + (1/2x)²
100 = |AM|² + 4²
100 - 16 = |AM|²
|AM|² = 84
|AM| = √84 = √(4 * 21) = 2√21 -------- ODPOWIEDŹ
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P = 1/2 * |AB| * |CD| = 1/2 * 10 * 8 = 40
|CB| = x
P = 1/2 * |AM| * |CB|
40 = 1/2 * 10 * x
40 = 5 * x
x = 40 : 5
x = 8
|AB|² = |AM|² + (1/2|CB|)²
10² = |AM|² + (1/2x)²
100 = |AM|² + 4²
100 - 16 = |AM|²
|AM|² = 84
|AM| = √84 = √(4 * 21) = 2√21 -------- ODPOWIEDŹ