A.1 Supplementary and Vertical Angles

Big Idea

Understand why vertical angles are congruent using properties of supplementary angles.

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Paper-based Materials

A.2 Corresponding Angles

Big Idea

Discover that corresponding angles are congruent.

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Paper-based Materials

A.3 Alternate Interior and Same Side Interior Angles

Big Idea

Discover the relationship between same-side interior and alternate interior angles when two parallel lines are cut by a transversal.

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Paper-based Materials

A.4 Missing Angles

Big Idea

Use angle relationships to find missing angles when two parallel lines are cut by a transversal.

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Paper-based Materials

 

A.5 Angle Sum Theorem

Big Idea

Explain why the sum of the measures of the interior angles of a triangle is 180 degrees.

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Paper-based Materials

A.6 Exterior Angle Theorem

Big Idea

Apply the exterior angle theorem to find missing angles of a triangle.

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Paper-based Materials