the measurement of an angle, half the size of a 90 degree right angle (the angle made by the meeting of two straightlines perpendicular to each other). (DIAGRAM) —PDC Volume 1 Approved Glossary
45 DEGREES
ScnTUEU
the measurement of an angle, half the size of a 90 degree right angle (the angle made by the meeting of two straightlines perpendicular to each other). [DIAGRAM]