noun Mathematics.

- either of two angles that added together produce an angle of 90°.

noun

- either of two angles whose sum is 90°Compare supplementary angle

- Two angles whose sum is 90°.

noun Mathematics.

- either of two angles that added together produce an angle of 90°.

noun

- either of two angles whose sum is 90°Compare supplementary angle

- Two angles whose sum is 90°.