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Two: a straight line and a curved line.

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Q: How many sides does a semi-circle have?

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180º degrees.

One. The line of symmetry for a 180 degree arc (a semicircle) is the line that bisects the arc.

A semicircle has 180 degrees

180x2= 360 degrees

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None A semicircle is the shape of a protractor (or half a pizza). It has one straight side and one longer curved edge.

A semicircle.A semicircle.A semicircle.A semicircle.

Semicircle has four syllables.

One is Anticline, which is a semicircle that is like a hill but stop in the middle or the way down. A Syncline, is a semicircle with pressure at both sides. A Monocline, is a semicircle that goes flat with pressure

an ovalish shape, like this () Or perhaps a semicircle.

semicircle

If the semicircle is placed on 1 side of the rectangle:Find the total perimeter(circumference) of the side opposite to the one with the semicircle's base and the 2 sides perpendicular to the semicircle's base.The formula for circumference of a circle is 2πr.Thus for the semicircle we will take the circumference as πr.Find the sum of 1st and 2nd points. This is the final answer.

180º degrees.

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