You can use similar triangles to find missing measures according to proportional relationships.
Similar triangles are two triangles that share these two features listed as follows:
The second feature, the proportional side lengths, is what is used to find the missing measures, as proportional relationships are built according to them.
When two triangles are similar, the equivalent side lengths have to be identified for the two triangles, and those are the sides that have the same angle measures.
Then, for the two triangles, the equivalent sides will have proportional lengths, and then these equations will involve a missing length. Then cross multiplication is applied and the equation can be solved for the missing length.
More can be learned about similar triangles at brainly.com/question/11920446
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