An inequality in a coordinate system Animation Play

Constructing a line parallel to a given line Simulation Play

Constructing a perpendicular to a given line Simulation Play

Constructing a perpendicular to line at a point off the line Simulation Play

Constructions using a ruler and a compass Animation Play

Coordinates of midpoints of line segments Class activity Play

Coordinates of midpoints of line segments Whiteboard presentation Play

Defining inequalities in a coordinate system Simulation Play

Defining inequalities in a coordinate system Student activity Play

Defining inequality in a coordinate system Simulation Play

How to construct a line parallel to a given line Student activity Play

How to construct a line perpendicular to a given line Student activity Play

How to construct a line perpendicular to a given line Animation Play

How to construct an isosceles triangle Student activity Play

Isosceles triangles and symmetry Student activity Play

Ruler-and-compass constructions Whiteboard presentation Play

Ruler-and-compass constructions Class activity Play

Set of points in a coordinate system Whiteboard exercise Play

Set of points in a coordinate system Student activity Play

The equation describing the line Whiteboard exercise Play

The line in a coordinate system Animation Play

The lines of symmetry Whiteboard exercise Play

The symmetry of isosceles triangles Animation Play

Two inequalities in a coordinate system Animation Play

Two more quadrilaterals Student activity Play