Question

Julia was creating similar triangles in the coordinate plane. The first triangle had a rise of 3 and a run of 10. The second triangle had a rise of 7. 5. Analyze Julia’s work to see if she found the correct length of the run for the second triangle to be similar to the first triangle. 1. 3 10 = 7. 5 x 2. 75 = 3x 3. X = 25 Is Julia correct? If not, what was her mistake? Yes, she is correct. No, her proportion does not have the corresponding measures from corresponding figures in the same positions in the ratios. No, she needed to have the product of the numerators equal to the product of the denominators. No, she needed to multiply 7. 5 to both sides.

Answer 1

Yes julia is correct the run of the scond similar triangle will be b2=25.

What are simlilar traingles?

The similar triangle are those whose three sides or one angle or two sides or two angles one side are equal.

In the given:

Height of first triangle h=3

Base of first traingle =10

Height of second triangle =7.5

The base of second triangle b2 = ?

From the triangle similarity

$\dfrac{h_1}{b_1}=\dfrac{h_2}{b_2}$

$\dfrac{3}{10}=\dfrac{7.5}{b_2}$

$b_2=\dfrac{7.5\times 10}{3}$

$b_2=25$

Thus julia is correct the run of the scond similar triangle will be b2=25.

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