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Given 3 sides from 2 similar triangles

CONCEPTS

Similar Triangles

• Corresponding angles are equal

• Sides are proportional

• Area & perimeter are proportional


What does sides are proportional mean?





• Corresponding sides are proportional to one another, a/p = b/q = c/r

• Corresponding sides have the same ratio, a : p = b : q = c : r


Tips

• If a triangle has a hypotenuse, it is a right triangle. The hypotenuse is the longest side of the triangle.

PRACTICE PROBLEMS

Question 1 What is the length of line AB?










-- Answer -- 25/3

DA / EA = DC / EB

25 / EA = 15 / 5, EA = 25/3

ACT PRACTICE PROBLEMS

72c

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