$\"\"$

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The coordinates of the vertices are $\"\"$ .

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The distance d between the points $\"\"$ formula is

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$\"\"$ .

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$ (Simplify)

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$ (Simplify)

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$ (Simplify) $\"\"$ $\"\"$ (Substitute $\"\"$ )

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$\"\"$ (Simplify)

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$ (Simplify)

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$ (Simplify)

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$\"\"$ .

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By the definition of congruent segments, all corresponding segments are congruent.

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So, $\"\"$ by SSS. $\"\"$

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The triangles are congruent, $\"\"$ .