5. Angles in a quadrilateral add up to...
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.
Questions
What do you notice about the sum of all four angles? Does this hold true for any shaped quadrilateral?
Do the lengths of the edges matter? Why / why not?
What is the maximum number of 90° angles you can have in a single quadrilateral?
Can you make any 'special' quadrilaterals? (they have special names like 'square', 'rectangle' and 'rhombus')
*Quickfire Challenge!*
Let us hide one of the angles and see if you can work out the missing angle!