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Congruent Triangles: ASA and AAS Theorems

Core Standard: HSG-SRT.B.5

Aligned To Common Core Standard:

Trigonometry - HSG-SRT.B.5

Printable Worksheets And Lessons


  • ASA Step-by-step Lesson - Find the two triangles that have angle-side-angle going for them.

  • Guided Lesson - As usual, I focus on the theorem that I left out in the lesson.

  • Guided Lesson Explanation - I have been getting a few responses from teachers asking me if I can color more of the sheets like this one. I guess red really does it for you?

  • Practice Worksheet - Find the congruency and the theorem that proves it.

  • Matching Worksheet - This makes you remember the labels found on the triangles.

AnswersAnswer Keys



View Answer Keys- All the answer keys in one file.






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Homework Sheets

Homework 1 and 2 focus on an individual theorem. Homework 3 looks at both of them.




Practice Worksheets

Find the triangles that match the criteria given.




Math Skill Quizzes

See which congruence statement fits best.