Mathematics for IGCSE & O level - Geometrical Terms (Section 5 - No. 25)
What is a 'vertex' in the context of a 2-D shape?
Where two sides meet.
A flat surface.
Where three or more edges meet.
A corner
คำอธิบาย
In 2-D shapes, a vertex is where two sides meet, and commonly referred to as a corner.