8. I know that and i'm 7 years old.
Triangular pyramid = tetrahedron has 4 points = 4 vertices
Square pyramid : 5 vertices. Triangular pyramid : 4 vertices.
Both have 4 vertices, though he vertices of a square are 2 dimensional vertices while those of a triangular pyramid are 3-d.
the answer is five. vertices is the plural form of vertex which is the point that two lines intersect to form an angle. so you have 1 vertex at each corner and another at the peak.