Background. In the village, Birk lived with Miranda and Sofia. One day, he went out to the sea, but he got lost and died.
Twenty-year-old Prince Hugo proposes to Sofia on her 19th birthday, and she happily accepts!
Perpendicular lines are lines, segments or rays that intersect to form right angles. The symbol ⊥ means is perpendicular to .
intersectionThe intersection of a set A with a B is the set of elements that are in both set A and B. The intersection is denoted as A∩B.