right-angled

• For instance, any courses you sail like these will be the hypotenuses of a series of right-angled triangles. —  Lectures in Navigation
• Note padded right-angled tin splint; also three strips of surgeon's plaster on arm and forearm.] —  The Home Medical Library, Volume I (of VI)
• It forms a large right-angled triangle with Pollux and Betelgeuze. —  A Field Book of the Stars
• The glass shows two small stars forming a right-angled triangle with it. —  A Field Book of the Stars
• Lines connecting the stars γ Andromedæ, Algol, and α Persei form a right-angled triangle. —  A Field Book of the Stars

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