For this activity, we will be dragging the pink points around to see what happens to the angles α, β, γ and δ as well as what we can observe.[br][br][u]Questions[/u][br][br]What do you notice about the sum of all four angles? Does this hold true for [b]any [/b]shaped quadrilateral?[br]Do the lengths of the edges matter? Why / why not?[br]What is the maximum number of 90° angles you can have in a single quadrilateral?[br]Can you make any 'special' quadrilaterals? (they have special names like 'square', 'rectangle' and 'rhombus')[br][br]*Quickfire Challenge!* [br][br]Let us hide one of the angles and see if you can work out the missing angle!