Is it possible for the same

(a) line segment to have two different lengths?

(b) angle to have two different measures?

Name the points and then the line segments in each of the following figures (Fig. 2.30):

Which points in Fig. 2.31, appear to be mid-points of the line segments? When you locate a mid-point, name the two equal line segments formed by it.

Will the measure of ∠ABC and of ∠CBD make measure of ∠ABD in Fig. 2.32?

Will the lengths of line segment AB and line segment BC make the length of line segment AC in Fig. 2.33?