Concave In detail
Concave down (233 pages)
/do • Above • Axis • Both • Center • Circular • Converge • Curve • Curves • Decreasing • Definition • Di/do • Distance • Distorts • Equation • Exist • Flat • Flattest • Focal • Form • Formula • Image • Images • Inward • Its • Lens • Light • Like • Line • Lines • Made • Mirror • Oblique • Off • Opposite • Outside • Outward • Point • Polygon • Positive • Radius • Rays • Real • Straight • Surface • They • Two • Virtual • When • Where