What shape is formed by the intersection of two perpendicular diagonal planes through the center of a cube?

Square

What weapon did Peter use to strike during Jesus’ arrest? Who composed the jazz standard "Take the 'A' Train"? Who was the first African-American athlete to win four gold medals at the 1936 Olympics in Berlin? Who led the 1676 rebellion in Virginia protesting Governor Berkeley's policies? In which decade was Pong originally introduced to arcades?