Question

1. all of the following constructions start with a line segment except what? constructing equilateral triangles constructing a 45° angle constructing a line perpendicular to a point on a line constructing a 30° angle

Explanation:

When constructing an equilateral triangle, constructing a 45 - degree angle, and constructing a 30 - degree angle, we often start with a line segment. But when constructing a line perpendicular to a point on a line, we start with a line and a point on that line, not necessarily a line - segment.

Answer:

constructing a line perpendicular to a point on a line