In our previous classes, we have found the sum of three angles of a triangle. An activity is suggested here to find the sum of three angles of a triangle.
Activity
Draw a scalene triangle, an acute angled triangle, an obtuse angled triangle, an equilateral triangle and a right angled triangle. Measure the angles in all the figure.
Enter the measure in the table given. What do you observe? What do you conclude with respect to the sum of the magnitudes of all angles? What generalisation can you arrive at?
