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geometryan angle whose measure is equal to 90 degrees.Similar:perpendicular angle
A right angle is an angle that measures exactly degrees. It corresponds to a quarter turn or the quarter of a full revolution. In terms of radians, a right angle is equivalent to radians.
If two lines intersect at a right angle, they are said to be perpendicular.
A perpendicular angle is equal to a quarter of a full rotation. A perpendicular angle is measured as 90 degrees or π/2 radians.
An acute angle is an angle that measures less than 90 degrees.
An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees. It is larger than a right angle and smaller than a straight angle.
An angle is the figure formed by two rays sharing a common endpoint called the vertex. Its size, measured in degrees or radians, is the amount of rotation needed to align one ray with the other.
A perpendicular angle is equal to a quarter of a full rotation. A perpendicular angle is measured as 90 degrees or π/2 radians.
A right triangle (or right-angled triangle) is a triangle in which one of the angles is a right angle (90 degrees). The side opposite the right angle is called the hypotenuse, and it is the longest side. The other two sides are known as the adjacent and opposite sides, relative to the non-right angle being referenced.