assertEquals(1, r2.distance(r), PRECISION);
}
@Test
public void testDistanceWhenSeparatedByDiagonally() {
Rectangle r = rectangle(0, 0, 2, 1);
Rectangle r2 = rectangle(3, 6, 10, 8);
assertEquals(Math.sqrt(26), r.distance(r2), PRECISION);
assertEquals(Math.sqrt(26), r2.distance(r), PRECISION);
}