Circle Similarity
Geometry · Flashcards
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QUESTION What is the center of the circle (x−8)2+(y+3)2=16? QUESTION What is the radius after dilating a circle of radius 5 by k=−2? QUESTION What is the circle equation after dilating x2+y2=16 about the origin by k=21? Tap to flip before you grade ANSWER x2+y2=4. Radius scales from 4 to 2: (21)2×16=4. Swipe → got it · swipe ← still learning