Illustrated Mathematics Dictionary - Letter A    

Abacus Abscissa Absolute Value Accuracy Acre Acute Angle Acute Triangle Add Addend Addition Additive Identity Additive Inverse Adjacent

Adjacent Angles Algebra Algorithm Alternate Exterior Angles Alternate Interior Angles Altitude Altitude (Geometry) AM Analog Clock or Watch Angle Angle Bisector Annual Annual Percentage Rate (APR)

Annulus Anticlockwise Apex Apothem Approximation Arc Arc Length Area Argument Arithmetic Arithmetic Sequence Arm of an Angle Array

Ascending Order Asset Associative Law Asymmetry Asymptote Attribute Autumn Average Axes Axis (geometry) Axis (graph) Axis of Symmetry