Lines and angles
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Concurrent Lines, Medians, and Altitudes
Explore the relationships between perpendicular bisectors, the circumscribed circle, angle bisectors, the inscribed circle, altitudes, … and medians using a triangle that can be resized and reshaped.
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- Lesson Info
- Launch Gizmo
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Construct Parallel and Perpendicular Lines
Construct parallel and perpendicular lines using a straightedge and compass. Use step‑by‑step explanations and feedback … to develop understanding of the construction.
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Constructing Congruent Segments and Angles
Construct congruent segments and angles using a straightedge and compass. Use step‑by‑step explanations and feedback to … develop understanding of the construction.
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Investigating Angle Theorems - Activity A
Explore the properties of complementary, supplementary, vertical, and adjacent angles using a dynamic figure.
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Investigating Angle Theorems - Activity B
Explore the properties of complementary, supplementary, vertical, and adjacent angles using a dynamic figure.
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- Lesson Info
- Launch Gizmo
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Investigating Parallel Lines and Planes
Explore the properties of intersecting, parallel, and skew lines as well as lines in the plane. Rotate the plane and lines … in three‑dimensional space to ensure a full understanding of these objects.
