PROGRAMS BY iStoa

Be a geometer with Dr. Geo: construct and manipulate interactivegeometric models. Learn geometry, mathematics (and physics, too!) visually andinteractively.- Construct quadrilaterals and explore the properties of the par

In this free version, the following features are not activated: parallel and perpendicular lines, circle and save a sketch. Purchase the complete version to get it activated.Be a geometer with Dr. Geo: construct and manipula