Exterior Angle Sums
Students explore the concept of exterior angle sums. In this exterior angle sums lesson, students construct triangles and quadrilaterals using Cabri Jr. Students measure the exterior angles of the triangles and quadrilaterals and find the sum.
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Unknown Angle Proofs—Proofs with Constructions
Provide your emerging mathematicians with the tools to learn as they incorporate auxiliary lines to solve unknown angle proofs in this continuing segment. They decipher information from a diagram to uncover the missing pieces and...
9th - 10th Math CCSS: Designed
Postulates, Angles, and Their Relationships
More than a worksheet, learners go through geometry topics example by example on the nicely organized handout. From postulates to classifying angles, there are rules and examples provided for each topic. The ten pages of problems provide...
8th - 11th Math CCSS: Adaptable
Congruence, Proof, and Constructions
This amazingly extensive unit covers a wealth of geometric ground, ranging from constructions to angle properties, triangle theorems, rigid transformations, and fundamentals of formal proofs. Each of the almost-forty lessons is broken...
8th - 10th Math CCSS: Designed
Lesson Plan: I Can Name That Angle in One Measure!
In this angle instructional activity, eighth and ninth graders explore angles made using parallel lines and a transversal. They identify the types of angles and the characteristics of each one. Puils create drawings that illustrate angle...
8th - 9th Math
Identifying Similar Triangles
Math whizzes work with angle sums and exterior angles to figure out the measure of other angles. This particular publication provides comprehensive support in the form of an anticipatory activity, questions designed to prompt discussion,...
7th - 9th Math CCSS: Designed