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G.G.17 Construct a bisector of a given angle, using a straightedge and compass, and justify the construction

G.G.18 Construct the perpendicular bisector of a given segment, using a straightedge and compass, and justify the construction

G.G.19 Construct lines parallel (or perpendicular) to a given line through a given point, using a straightedge and compass, and justify the construction

G.G.20 Construct an equilateral triangle, using a straightedge and compass, and justify the construction

G.G.21 Investigate and apply the concurrence of medians, altitudes, angle bisectors, and perpendicular bisectors of triangles

G.G.22 Solve problems using compound loci

G.G.23 Graph and solve compound loci in the coordinate plane