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To decide whether two triangles are similar, is it enough to know that one pair of corresponding angle measures is equal? Use your observations
and your understanding of similarity transformations to explain your answer.
B
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A-A-
. Along with a pair of equal angles, two pairs of corresponding sides should also be equal. (SAS postulate).
• With the above 2 conditions, the triangles they form are similar.
• When the two sides of a triangle and their included angle are fixed, then the three vertices of that triangle are fixed.
I
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