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How can one draw a straight line?
One can draw a straight line by using a ruler. Should a ruler not be available, one can use the edge of a book or another piece of paper to guide the line straight.
What is the straight line from the centre to the edge of a circle?
The radius. The one that's twice as long as that diameter.
Which shape has got 1 side and no corners?
A mobius loop which has one side and just one edge, could be your answer. Otherwise, a straight line segment may be it?
How many equal length sides does a semicircle have?
None A semicircle is the shape of a protractor (or half a pizza). It has one straight side and one longer curved edge.
What are radii?
Radii is the plural of the word radius.If you have a circle, bisect it with a straight line - that is the diameter. Cut that in half - that is the radius. The radius is the distance from the center to the edge of the circle.A radius is one half the diameter of a circle ( the straight line distance from one point of the edge of a circle to the other side, directly in the middle). The plural form of radius is radii.
