Created by StemPy LabA parallelogram has all four of its sides touching one circle. What kind of parallelogram must it be?
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← A round wire ring fits snugly inside a triangular frame with a right angle, touching all three bars. The two short bars are 12 cm and 35 cm and the long bar is 37 cm. What is the radius of the ring?Two circles have radii 10 cm and 4 cm, and their centres are 10 cm apart. A straight line touches both circles and does not cross the line joining the centres. How long is the segment of this line between the two points of contact? →
More onGeometry › Circles
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