$\"\"$

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Observe the figure:

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The sides of the $\"\"$ are $\"\"$ and $\"\"$ .

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The sides of the $\"\"$ are $\"\"$ and $\"\"$ .

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If $\"\"$ and $\"\"$ are similar, then measures of their corresponding sides are proportional.

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$\"\"$ (Corresponding sides are proportional)

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

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The equal property of equality: $\"\"$ (or) $\"\"$ (or) $\"\"$ .

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Case(i): $\"\"$ .

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$\"\"$ (First proportion)

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$\"\"$ (Find the cross product)

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$\"\"$ (Multiply)

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$\"\"$ (Divide each side by $\"\"$ )

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$\"\"$ (Cancel common terms)

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The value of $\"\"$ is $\"\"$ .

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$\"\"$

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Case (ii): $\"\"$ .

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$\"\"$ (Second proportion)

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$\"\"$ (The cross product)

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$\"\"$ (Multiply)

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$\"\"$ (Divide each side by $\"\"$ )

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$\"\"$ (Cancel common terms)

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The value of $\"\"$ is $\"\"$ .

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Therefore, the missing measures are $\"\"$ and $\"\"$ . $\"\"$

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$\"\"$ and $\"\"$ .