a cackling goose

(history) the twelve 律令 (ritsuryō) positions inside the Japanese imperial seraglio

(astrology, collective) the twelve zodiac signs

regular dodecahedron

regular icosahedron

Kyūjitai form of 十二面体: dodecahedron

(uranography) Winter Triangle - a bright asterism of the northern winter sky. Its corners are the stars Betelgeuse, Procyon, and Sirius.

(uranography) Summer Triangle - a bright asterism of the northern summer sky. Its corners are the stars Altair, Deneb, and Vega.

three-legged race / (idiomatic) cooperating and working together to accomplish a task

dirt cheap