Question

what is the purpose of a straightedge in geometric constructions? a. to measure angles b. to check the straightness of lines c. to measure distances d. to draw straight lines

Explanation:

A straightedge is a tool used in geometric constructions. It is not used for measuring angles (a protractor is for that), nor for measuring distances (a ruler with markings is for that). While it can be used to check the straightness of a line to some extent, its primary and most fundamental purpose is to draw straight lines.

Answer:

d. To draw straight lines