Angles in triangle investigation
Press on point A and move it up and down to change the shape and angles of the triangle
What is the sum of the interior angles in a triangle? Repeat this for different triangles is your answer still the same?
How does the exterior angle (in purple) compare to the sum of the two opposite interior angle (red and blue)? Repeat this for different triangles. Is your answer still the same?
EXIT TICKET
Consider the triangle above
a) What the the value of angle y? Explain how you know