Two of them
there are two angles
A pentacontagon has 50 vertices (not vertices's!).
16 vertices.16 vertices.16 vertices.16 vertices.
5 vertices
8 vertices
2
4 faces and 2 vertices.
Semicircle has four syllables.
180º degrees.
there are two angles
1
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
A pentacontagon has 50 vertices (not vertices's!).
16 vertices.16 vertices.16 vertices.16 vertices.
8 vertices