Tanisha Pal Singh
16 Jan 2019
Central angle is an angle that has it’s vertex on the centre of the circle and has it’s ends on the circle. Arc= Angle. The sum of central angles of the circle measures 360 degrees. Circumference is measuring outside the circle and it’s formula is 2× pie× r, where r is radius or pie× d, where d is diameter. A diameter is a chord that passes through the centre and has both ends on the circle and is made up of collinear radii. d=2×r OR r=d÷2
Tanisha Singh Geometry Blog 