A chord and a diameter of a circle Student activity Play

A chord and a diameter of a circle Whiteboard exercise Play

A circle and a line Animation Play

A circle and a line Whiteboard exercise Play

A circle and a line Student activity Play

A circle and a straight line Simulation Play

A circle and a straight line Student activity Play

A circle and a straight line Student activity Play

A circle and a straight line Whiteboard exercise Play

A constant function Animation Play

A converging lens Animation Play

A cyclic quadrilateral Student activity Play

A diagonal of a cuboid Animation Play

A figure surrounded by straight lines Whiteboard exercise Play

A figure surrounded by straight lines Student activity Play

A golden section Animation Play

A half-plane bounded by a line Animation Play

A line and a circle Whiteboard exercise Play

A line and a circle Student activity Play

A line and a point of symmetry Animation Play

A line going through two points Animation Play

A line in 3-D going through two points Simulation Play

A line in space Animation Play

A line of best fit Whiteboard exercise Play

A line of best fit Student activity Play