By all means! - averaging 2 numbers

Use the sliders to set the two numbers [br]whose arithmetic and geometric means [br]you wish to find.[br][br]Drag the dots on the coordinate axes to find [br]the geometric mean and the arithmetic mean.[br][br]How would you extend these ideas to the[br]averages of three numbers?[br][br]What other questions [could,would] you ask?

Information: By all means! - averaging 2 numbers