The cross section of a cylinder taken parallel to the base produces which two dimensional shape

What is the ratio of the length of an object in yards to the length of the same object in miles?

Which two undefined geometric terms always describe figures with no beginning or end?

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b