What's the area and perimeter of a right triangle with sides 5, 12 and 13( 5 and 12 are the base and height)

Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no. explain your mathematical thinking

Drag statements and reasons to each row to show why the slope of the line between d and e is the same as the slope between e and f, given that triangles a and b are similar.