Suppose x is any positive number. Circle 1: center (0, 0) and radius 2x
Circle 2: center (0, 0) and radius 10x
Why iS circle 1 similar to circle 2?
• Both circles have congruent diameters.
• 1 Circle 1 and circle 2 have equal areas.
O Circle 2 is a dilation of circle 1 with a scale factor of 0.2.
O Circle 2 is a dilation of circle 1 with 1 a scale factor of 5.