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Assessment
Which of the following statements is true about similar triangles?
Their corresponding angles are equal.
Their corresponding sides are equal.
They must have the same area.
Their corresponding altitudes are equal.
If triangle ABC is similar to triangle DEF, and the ratio of their corresponding sides is 2:3, what is the ratio of their areas?
2:3
4:9
3:2
1:1
In similar triangles, if the lengths of two sides of the first triangle are 3 and 4, and the lengths of the corresponding sides of the second triangle are 9 and 12, what is the scale factor?
1:3
3:1
2:3
1:2
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