直角坐标

直 = 十 + 目 + 一 : Mnemonic symbol: someone straight edge. James II of England (zh) decided to go straight edge (直) in the space station's kitchen (Ø2), and he also decided that this means he won't listen to music anymore. The Eye of Providence (目) promptly plays some music on its flute (一) to tease him, whereupon the James II of England defends himself by holding up a cross (十).

角 = ⺈ + 用 : Joan of Arc finds a hurt crane in a corner inside of the aorta. The crane hurt itself with a sharp horn earlier, which is now lying in another corner. Joan of Arc pulls out her first aid kit and administers first aid.

角 = ⺈ + 用 : Mnemonic symbol: a horn.

角 = ⺈ + 用 : Zeus is practising his theatre role just inside the elevator's kitchen: he's gonna play the dying swan. A crane flies by and sees him, thinking Zeus is really dying, and instantly starts administering first aid with a first aid kit he coincidentally carried around.

坐 = 从 + 土 : Zapatista Zebra (zu) sits next to a rubber chicken (从) on a clay (土) bench (mnemonic symbol for 坐) in the observatory's bathroom.

标 = 木 + 示 : 标 is a part of 标志, the word for "logo", like the one with the famous puma.