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

a triangle (polygon)

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

a right-angled triangle

acute triangle (triangle all of the angles of which are acute)

obtuse triangle

a tridecagon

a male given name

most, -est

to shine dazzlingly / to be crowned with glory, to sparkle