Math Problem Statement
右の図において,DEFはABCを平行移動させたものである。AB =15cm, BC=9cm, AC=12cm, ACB=90°のとき、四角形ABEDの周の長さから四角形ACFDの周の長さをひいた差を求めなさい。
Solution
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Math Problem Analysis
Mathematical Concepts
Geometry
Perimeter
Right Triangles
Parallel Translation
Formulas
Perimeter of a quadrilateral = sum of side lengths
Pythagorean theorem: a^2 + b^2 = c^2
Theorems
Pythagorean Theorem
Suitable Grade Level
Grades 8-10
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