Semi = half
A semi-circle the answere is semi-circle or a breve
An angle subtended at the semicircular arc is 90 degrees.
The angles of a semi-circle are on a straight line and angles on a straight line add up to 180 degrees.
semicircleA half circle is called a semicircle.Half a circle is a semi-circle
A semi-circle covers an angle of 180 degrees.
A right angle triangle can fit into a semi-circle
An inscribed angle is an angle formed by two chords in a circle which have a common endpoint. This common endpoint forms the vertex of the inscribed angle.The other two endpoints define an intercepted arc on the circle Any angle inscribed in a semi-circle is a right angle. The proof is simply that the intercepted arc is 180 so the angle must be half of that or 90 degrees.
It is the consequence of one of the circle theorems and in some books, it is considered a theorem itself. The underlying proposition is that the angle subtended at the circumference of the circle by any arc of a circle is half the angle subtended at the centre. In the case of a semicircle, the arc is the half circle and the angle at the centre is the one that the diameter makes at the centre of the circle ie 180 degrees. So the angle at the circumference is half that ie 90 degrees.
Half a circle is called a semi-circle. Sometimes it is called a half-moon.
Semi = half
A semi-circle the answere is semi-circle or a breve
A semi-circle
A semi circle is made up of two right angles.
An angle subtended at the semicircular arc is 90 degrees.
The angles of a semi-circle are on a straight line and angles on a straight line add up to 180 degrees.
semicircleA half circle is called a semicircle.Half a circle is a semi-circle