Geometry Triangle Congruence Theorems Activity
DiffiMath
12 Followers
Grade Levels
9th - 11th
Subjects
Resource Type
Standards
CCSSHSG-CO.A.1
CCSSHSG-CO.A.2
CCSSHSG-CO.B.7
CCSSHSG-CO.B.8
CCSSHSG-CO.C.10
Formats Included
- Word Document File
DiffiMath
12 Followers
Description
SSS, SAS, SSA. They mean absolutely nothing to my students. So instead of wasting a month on this unit, I condensed it into this activity which allows students to physically manipulate objects and discover which shortcut theorems can be used to show that two triangles are congruent.
It is tough to implement at first, but it has done wonders for my students once they get the hang of it. We constantly refer back to this experiment whenever we are proving things in later units.
Total Pages
Answer Key
N/A
Teaching Duration
3 days
Report this resource to TPT
Reported resources will be reviewed by our team. Report this resource to let us know if this resource violates TPT’s content guidelines.
Standards
to see state-specific standards (only available in the US).
CCSSHSG-CO.A.1
Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.
CCSSHSG-CO.A.2
Represent transformations in the plane using, e.g., transparencies and geometry software; describe transformations as functions that take points in the plane as inputs and give other points as outputs. Compare transformations that preserve distance and angle to those that do not (e.g., translation versus horizontal stretch).
CCSSHSG-CO.B.7
Use the definition of congruence in terms of rigid motions to show that two triangles are congruent if and only if corresponding pairs of sides and corresponding pairs of angles are congruent.
CCSSHSG-CO.B.8
Explain how the criteria for triangle congruence (ASA, SAS, and SSS) follow from the definition of congruence in terms of rigid motions.
CCSSHSG-CO.C.10
Prove theorems about triangles.
Reviews
Questions & Answers
12 Followers
