- A right triangle or right-angled triangle, sometimes called an orthogonal triangle or rectangular triangle, is a triangle in which two sides are perpendicular forming a right angle (1⁄4 turn or 90 degrees).
- Kitalpha (stars.astro.illinois.edu)
KITALPHA (Alpha Equulei). Most ancient constellations dominate their parts of the sky. A few, however, are remarkably obscure and hard to find, among them Equuleus, the Little Horse, its brightest star (Kitalpha) only mid-fourth magnitude (3.92).
