Q 2: Find the measure of each of the exterior angle of a regular polygon of 4 sides. 90 degrees 80 degrees 100 degrees

Q 3: Find angle EAB

75^{o} 45^{o} 60^{o}

Q 4: The sum of the interior angles of a polygon of 12 sides is ____ degrees. Answer:

Q 5: The sides of a triangle are 50cm, 80cm, 100cm, check if this is a right angled triangle. no yes

Q 6: The ______ of a triangle is the point of concurrence of the perpendicular bisectors of the sides of the triangle. circumcentre circumcircle circumradius