My cousin built his house on the vertex of the highest hill in the county.
It may be noticed that if the scales of x and be properly adjusted, the curve of positions in the present problem is the portion of a cycloid extending from a vertex to a cusp.
The vertex of my roof needs some serious repair.
The vertex of the Washington Monument is made of aluminum, an extremely expensive material at the time of its construction.
It may be shown to be the locus of the vertex of the triangle which has for its base the distance between the centres of the circles and the ratio of the remaining sides equal to the ratio of the radii of the two circles.