Question

Do i have these right?

1.) The angles of similar triangles are ?
"Equal"
2.) The corresponding sides of similar polygons are ?
"similar"
3.) If two sides of one triangle are proportional to two sides of another and included angles are equal, then the triangles are ?
"similar"
4.) If three ? sides of one triangle are proportional to three sides of another, then the triangles are similar.
"similar"
5.) If two polygons are similar, the ratio of their perimeters equals the ? of corresponding sides.
"length"