The document discusses key geometric concepts such as midpoints, midsegments, and the perpendicular bisector theorem. It provides methods for finding unknown sides in geometric figures and emphasizes the relationship between points and segments. The content encourages solving for various variables represented by letters.

2. midpoints
midsegment

3. parallel
half
AC || DE
DE = ½ AC

15. CONTINUATION
FINDING THE UNKNOWN SIDES

16. SOLVE FOR X

17. SOLVE FOR x.

21. Perpendicular Bisector
Theorem
If a point lies on the
perpendicular bisector
of a segment, then it is
equidistant from the
endpoints of the
segment.

22. Converse of the
Perpendicular Bisector
Theorem
If a point is equidistant
from the endpoints of a
segment, then it is on
the perpendicular.
bisector of the
segment.

23. Find the value of x.

24. Find the value of x.

25. Find RS.

26. Find EG.

27. Find JK.

28. Find AB.

38. TRY MORE: