An informal proof of the Angle-Angle (AA) criterion for similar triangles and informal arguments as to whether or not triangles are similar based on Angle-Angle criterion, with video lessons, examples and step-by-step solutions for students in Grade 8 and also for SAT/ACT prep.
Related Pages
Similar Triangles
Lesson Plans and Worksheets for Grade 8
Lesson Plans and Worksheets for all Grades
More Lessons for Grade 8
Common Core For Grade 8
Two triangles are said to be similar if they have two pairs of corresponding angles that are equal.
Concept Development
Exercises
Examples 1 - 3
Are the triangles shown below similar? Present an informal argument as to why they are or why
they are not.
Exercises 3 - 5
Are the triangles shown below similar? Present an informal argument as to why they are or why
they are not.
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