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8th Grade Math (Math 8) · Chapter 10 · Lesson 10.4 · Printable PDF

AA Similarity Worksheet with Answer Key

7 problems on AA similarity: deciding which triangles are similar from two angles, finding possible angles, triangle drawings with equal angles, a student's wrong proof, isosceles triangles, a camp stool, and a square in a corner. 2 pages, with a worked answer key.

7 problems2 pagesanswer key
Printable AA similarity worksheet with answer key - 8th Grade Math (Math 8) (Page 1 PDF preview)
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Try one first: a free Chapter 1 worksheet (PDF, no sign-in).

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What's on the worksheet

  1. Decide which of eight triangles given by two angles are similar:
  2. Find every measure an angle could have for triangles to be similar.
  3. Show two triangles are similar from an angle that is congruent to another.
  4. Find the mistake in a student's AA similarity statement.
  5. Decide if isosceles triangles with a given angle must be similar.
  6. Word problem: the seat of Lily's folding camp stool and its crossing legs.
  7. Find the side of a square that fits in the corner of a right triangle.

Teach it first

The free lesson teaches it with worked examples and practice problems.

AA similarity: the lesson ›

More Chapter 10 worksheets: Parallel lines, transversals and the triangle sum