CC

5 years ago

Hi pls advise why 6 sides minus 2 sides first and then multiple 180 degree?

Kai Xuan

5 years ago

Because there are 6 sides in the polygon and every angle that are side by side plus will be 180 degree

CC

5 years ago

Hi can u show me in colour which angles add up to 180 degree? Many thanks

Kai Xuan

5 years ago

angle that are side by side such as a and b ,so a+b is 180degree , easier it is every 2angle in the triangle plus together is equal to 180 degree

CC

5 years ago

Ok thanks..i understand the 6 sides..but do not understand why must minus 2 sides..

Kai Xuan

5 years ago

Because the formula for the sum of interior angle is the number of side minuse 2

CC

5 years ago

I see..thank u

Kai Xuan

5 years ago

Welcome