there are 5
19 corners as well.
Eight sided.....
A trapezium has 4 corners and it is a 4 sided quadrilateral
4
5 faces.... one at the bottom and four around the sides
five, four from the base and one from the very top of the pyramid.
four sides and four corners
A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges.
A triangular based pyramid has four faces, four veritices, and six edges.
There are four corners on a square.
It has 5 corners if it is a 3D shape like a piramid but if it is 2D it is 3