eating the first product of the season make one live longer / a wonder lasts but nine days

regular dodecahedron

regular icosahedron

Kyūjitai form of 十二面体: dodecahedron

radish, Raphanus sativus, (specifically) small red radishes

(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.

Kyūjitai form of 三位一体 (“Trinity”)

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

dirt cheap