Step-by-step explanation:
7 — Congruent Segments. The two separate segments are marked as having the same length. (That's what the hash mark means.)
1 — Line AB. An infinite line can be named by its name (m) or by two points on it (AB or AP or PB).
6 — Perpendicular Bisector. The line at right angles to the segment divides it into two congruent pieces. (Again, that's what the hash marks mean. The little square in the corner means the lines are perpendicular.)
4 — Ray. A ray is a half-line. It is an infinite line with an endpoint. Here, that endpoint is C, which could be the name of this ray (or CH, or CS).
2 — Collinear Points. The points are supposed to all be on the line. It looks like they mostly are, so we have to assume that is the intention. Points on the same line are collinear.
3 — Segment. A segment is a portion of a line between two points. This one can be called line segment MN (or NM).
5 — Midpoint. The arrow pointing to point G suggests that point is the geometry of interest. Segments AG and GB are marked as having the same length, so G is the midpoint of AB: it divides AB into two equal-length parts.