Question

complete the sentence.
the intersection of two regular pentagons can be ______.
a square
a line
a ray
a line segment

Explanation:

A regular pentagon is a closed polygon with five sides. The intersection of two closed polygons (regular pentagons here) will be a closed or bounded figure (or part of a figure with endpoints). A square has four right angles, but the angles of a regular pentagon are 108°, so their intersection can't be a square. A line and a ray are unbounded (a line has no endpoints, a ray has one), while the intersection of two closed polygons like regular pentagons will have two endpoints (bounded), so it can be a line segment.

Answer:

a line segment