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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
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