Prove Circles Similar
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what is the angle of a line that is 1/4 the radius
20 degrees
what is the angle of a line 1 1/5 of the radius
100 degrees
How do you prove that the circles are similar
Translate the circle to the center of the other circle, so the circles are concentric (they have the same center). Then, dilate the circle, so both circles coincide.
what is the scale factor when going from a small circle to a big circle
greater than 1
what is the scale factor when going from a big circle to a small circle
less than 1
how do you find scale factor
put one of the radi as the numerator and the other as the denominator but it has to be less than or greater than one based on the size of the circles