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A semicircle has one pair of parallel lines. This is because a semicircle is a half of a circle, and the diameter of a circle is the only line that can be drawn to create a pair of parallel lines. Therefore, the diameter of the semicircle acts as the pair of parallel lines.
Well, honey, a semicircle has one line of symmetry, which means it has one line of reflection that divides it into two equal parts. So technically, you could say a semicircle has one "parallel" line, but let's be real here, it's not really parallel to anything except itself.
a semi - circle has zero parallel lines
A semi-circle is a 180 degree half circle. A semi-circle does not have any corners. A circle does not have corners either. There are points of beginning and end in a semi-circle. In a circle the point of beginning is the same as the ending point.
180
yes,meridian is a semi circle
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