Respuesta :

rajvishah241108

Answer:

The radius is 60 degree so the whole diameter will be 120 degree now find the arc

hopegirma

Step-by-step explanation:

draw a Doameter and the measurement of the staright line is 180

then we have 60 radius

Diameter=2r

Diameter=2×60

Diameter=120

if the circle is semicircle the arc will be 180

the diameter cut the circle in two part or semicircle

to proof the arc is 180° we can add the two semicircle and 180°+180°=360°

the arc will be 180°