Geometry

Points, Lines and Angles

Points, lines and planes are the building blocks for geometry. In this introductory unit students explore these objects along with other basic geometric concepts and terms. These include the measure of an angle; the relationship among points, lines, and planes; the distance between two points, a point and a line, and two lines; and the relationships among the angles formed when two lines are cut by a transversal.

Geometry: Points, Lines and Angles Activities

Title Type

Determining Angle Measure

Determine the measure of an angle and if larger angles have longer "sides."

• 7860

Points, Lines, and Planes

Explore the relationships between points, lines, and planes.

• 8002

Points, Lines, and Distance

Investigate the distance between two points, a point and a line, and two lines.

• 6858

Creating Perpendicular Bisectors

Construct the perpendicular bisector of a line segment in several different ways and consider the role of circles in the construction.

• 6714

Exploring Perpendicular and Angle Bisectors

Create angle bisectors and explore the relationships between the two angles that are formed by the bisector.

• 6691

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.

• 7309

Alternate Interior Angles

Explore the relationships of the angles formed when two parallel lines are cut by a transversal.

• 7654