Geometry Triangle Congruence SSS SAS ASA AAS HL Theorems
by Making Algebra Fun by Angela Dougher © 2026
Premier Publisher
Price: $2 USD
Subjects: math,mathHighSchool,highSchoolGeometry,congruence
Grades: 9,10
Description
Students practice identifying the rule that proves two triangles congruent with 15 self-checking digital task cards. Each card shows a pair of triangles marked with tick marks, arcs, or right-angle marks. Students type SSS, SAS, ASA, AAS, or HL. Skills covered: - SSS: three pairs of congruent sides - SAS: two sides and the included angle - ASA: two angles and the included side - AAS: two angles and a non-included side - HL: hypotenuse and leg of right triangles - Triangles that share a side (reflexive property) - Triangles formed by intersecting segments (vertical angles) The deck has three cards for each rule, in mixed order. Cards progress from two separate triangles to shared sides and vertical angles. It works for independent practice, homework, stations, review, and sub plans. Each card includes alt text for screen reader users. Questions and alt text were created with the help of AI (Claude by Anthropic) and reviewed by the author for accuracy.