Double-angle formulas Class activity Play

Drawing a central angle Simulation Play

Drawing a hexagon inscribed in a circle Whiteboard exercise Play

Drawing a hexagon inscribed in a circle Student activity Play

Drawing a square inscribed in a circle Student activity Play

Drawing a square inscribed in a circle Whiteboard exercise Play

Drawing an angle Whiteboard exercise Play

Drawing an equilateral triangle inscribed in a circle Whiteboard exercise Play

Drawing an equilateral triangle inscribed in a circle Student activity Play

Drawing an inscribed angle Simulation Play

Drawing angles Student activity Play

Drawing angles Student activity Play

Drawing reflection diagrams Student activity Play

Early concepts of the structure of benzene Student activity Play

Energy losses Student activity Play

Energy losses Simulation Play

Equal angles imply parallel lines Student activity Play

Equal segments Animation Play

Equations involving the cosine function Whiteboard exercise Play

Equations involving the cosine function Student activity Play

Equations involving the tangent function Student activity Play

Equations involving the tangent function Whiteboard exercise Play

Exact values of trigonometric ratios for selected angles Animation Play

Exact values of trigonometric ratios for selected angles Student activity Play

Examples of angles Animation Play