Focus

• recognise that angles show the amount of turn between two lines, two edges or two surfaces that meet
• describe the point of an angle as the vertex
• recognise that the lengths of the lines forming an angle do not change the amount of turn
• review properties of right angles and straight angles
• name and describe other angles (acute, obtuse and reflex) according to amounts of turn

This resource helps teachers develop concepts and demonstrate processes using PowerPoint animations.