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How can I prove similarity using the AA rule? I'm stuck.
RaphaelSebaoun
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Jun 21, 2022
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How can I prove similarity using the AA rule? I'm stuck.
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RaphaelSebaoun
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Jun 21, 2022
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All right angles are congruent and A = A by reflexive property of congruence
Anime
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Jun 21, 2022
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The only way I used to prove is that angle c and d are right angles. But I need more proof and I don't know how to prove it.
JacobRTobey
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Jun 21, 2022
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Don't forget this concept. Profs in Calc 1 love to use this in related rates ladder questions.
aafhotshots
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Jun 21, 2022
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Angle ACB and Angle ADE are both right angles, so they’re both equal to 90 degrees. Angles BAC and EAD both just refer to the angle A, and thus they’re the same. Hence by the AA similarity, Triangles ACB and ADE are similar
TomLockyer
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Jun 21, 2022
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1. Angle a is congruent to angle a; reflexive property
2. Angle BCA is a right angle; given?
3. Angle D is a right angle; given?
4. Angle BCA is congruent to angle D; all right angles are congruent
5. Triangle ABC is similar to triangle AED; AA
scrfSA
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Jun 21, 2022
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scrfSA
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Angle BCA and EDA are both straight, so they are equal. Angle A is a Part of triangle EDA and triangle ABC, so ABC is similar to EDA
jordiporn
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Jun 21, 2022
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