Alternate Interior Angles
Explore the relationships of the angles formed when two parallel lines are cut by a transversal.
Creating Parallel Lines and Transversals
Create a pair of parallel lines cut by a transversal and investigate the relationships among the angles that are created.
Creating Perpendicular Bisectors
Construct the perpendicular bisector of a line segment in several different ways and consider the role of circles in the construction.
Determining Angle Measure
Determine the measure of an angle and if larger angles have longer "sides."
Exploring Perpendicular and Angle Bisectors
Create angle bisectors and explore the relationships between the two angles that are formed by the bisector.
Points, Lines, and Distance
Investigate the distance between two points, a point and a line, and two lines.
Points, Lines, and Planes
Explore the relationships between points, lines, and planes.