SCALENE TRIANGLE
IDEAS:
Move the 'vertices' - What changes and what stays the same?
Measure the angles at each point - What do they add up to?
Change the shape of the triangle and check the angles again - Do you notice anything?
Can you make it look like a equilateral, isosceles or a right angled triangle?
Investigate obtuse and acute angles?
Can you make a triangle with two obtuse angles? - Explain your answer?