Lin drew a triangle and a dilation of the triangle with scale factor 2: D
B
1. What is the center of the dilation? Explain how you know.
2. Which triangle is the original and which triangle is the dilation? Explain how you know,
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in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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answer: group b.

step-by-step explanation: