(100) plane

area of water plane

area of shear plane

area IR focus plane array

area infrared focal plane array

arbitrary conducting ground plane

application plane

any projection plane

anticlastic plane

anterior perineal plane for ultra-low anterior resection of the rectum

antenna plane

Anomaly model of geochemical exploration of Top in ring and plane shape

annular ellipse plane

angular plane surface

angle-bisecting plane

angle plane

angle of transverse plane