4. Angles in a triangle add up to...
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.
Questions
What do you notice about the sum of all three angles? Does this hold true for any shaped triangle?
Do the lengths of the edges matter? Why / why not?
Is it possible to have two 90° angles in one triangle?
*Quickfire Challenge!*
Let us hide one of the angles and see if you can work out the missing angle!