In a circle, it is argued that there are either no corners, or infinitely many, depending upon the depth of the mathematics involved.
Given that a semi-circle is half a circle, then the arc must have either 0/2 = 0 or infinity/2 = infinity corners.
Where the arc connects with the diameter, there are unquestionably two corners, so the two values are:
0+2=2 or infinity+2=infinity
2 or infinity
2
None because it has 1 straight side and no angles
180º degrees.
1
One. The line of symmetry for a 180 degree arc (a semicircle) is the line that bisects the arc.
A semicircle has 180 degrees
None because it has 1 straight side and no angles
an ovalish shape, like this () Or perhaps a semicircle.
Semicircle has four syllables.
If, by square corners, you mean corners that are right angles, then any polygon with four or more sides can have two square corners. Furthermore, apart from near the corners, the lines need even be straight so the shape need not be a polygon. In the limit a semicircle has two right angles.
1
180º degrees.
2
there are two angles
One. The line of symmetry for a 180 degree arc (a semicircle) is the line that bisects the arc.
No, a semicircle is not a quadrilateral
Semicircle
The possessive form is semicircle's.