For this activity, we will be dragging the pink points around to see what happens to the angles α, β and γ as well as what we can observe.[br][br]We will be moving the pink point to each of the crosses and note down any observations. [br][br][u]Questions[/u][br][br]What do you notice about those two angles (α, β and γ) on a straight line? What do they add up to?[br]Is there a difference between the different coloured crosses? [br]What angle symbol do we find when the pink dot is on the green diamond shapes? What does this symbol represent? [br]Does the length of the line affect the angle?[br][br][u]*Quickfire Challenge!*[/u] [br][br]Let us hide one of the angles (α or β or γ) and see if you can work out the missing angle!