Problem 29 of 7
Use the third-angle theorem to support AA similarity from We have two triangles where two pairs of corresponding angles are known to be equal.
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infer third angle from two angle pairs.
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Use third-angle theorem only after two angle pairs or triangle sums establish matching angles.
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Walkthrough
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1. Identify known equal angle pairs.
2. Use triangle angle sum to infer the third pair.
3. State AA similarity.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Using third-angle theorem from only one known angle.