Practice 2-5: Proving Angles Congruent
In this proving angles congruent worksheet, students find the values of variables when given adjacent, supplementary, vertical or complementary angles. This one-page worksheet contains 15 multi-step problems.
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Applications of Congruence in Terms of Rigid Motions
Corresponding parts, congruent parts, congruent corresponding parts—what does it all mean? The resource challenges pupils to identify corresponding parts for pairs of figures. It uses examples of figures that undergo rigid...
9th - 10th Math CCSS: Designed
Angles, Arcs, and Segments in Circles
Investigate relationships between angles, arcs, and segments in circles. Pupils use geometry software to discover the relationships between angles, arcs, and segments associated with circles. Class members use similar triangles to...
9th - 11th Math CCSS: Adaptable
Transformations in the Coordinate Plane
Your learners connect the new concepts of transformations in the coordinate plane to their previous knowledge using the solid vocabulary development in this unit. Like a foreign language, mathematics has its own set of vocabulary terms...
9th - 12th Math CCSS: Designed
Geometry: Transformations, Congruence, and Similarity
Rigid motions are to congruence as what are to similarity? Investigate properties of rigid motions and define congruence in terms of rigid motions with the ninth chapter of a 10-part eighth grade workbook series. The lesson then prompts...
7th - 10th Math CCSS: Designed
Angles Formed Between Transversals and Parallel Lines
While exploring the concept of transversals, Sal discusses corresponding angles, congruent angles, and opposite/vertical angles. He provides a thorough summation of these mathematical concepts. It is the first installment in a series...
8 mins 9th - 10th Math
Find Angle Measurements Using Vertical Angles
Take on a different angle with this geometry activity, in this case, the vertical angle. Challenge learners to prove that vertical angles of two intersecting lines are congruent using the property of supplementary angles as modeled in...
3 mins 6th - 8th Math CCSS: Designed