Will mark brainliest and give lots of 1. describe one way that concepts about similarity could be used in real life. 2. write two proportions in the form a/b=c/d. only one of your proportions should be a true equation. do not state which equation is true and which is not true. 3. give 3 possible side lengths for a triangle. for example, you could give the side lengths 3, 4, and 5.

1) If you have a rectangular 3"x5" photograph that you want enlarged to fit a frame whose length is 20", what will the width of the new photograph be?
2)  
     
3)  9, 12 and 15 would be possible sides of a triangle.

Similarity is when two figures have the same angle measures and the sides are proportional.
In a proportion, you can cross multiply to see if the proportions are equal.  If the cross products are equal, the proportion is true.
For 3 sides to make a triangle, the sum of the smaller two sides must be larger than the largest side.