Show how to write each of the following as a numerical expression then find the value of the expression.

If kn = 9 cm, mn = 21 cm, rs = 42 cm, and ps = 18 cm, what is the scale factor of figure klmn to figure pqrs?

How can we find the measure of an exterior angle if we know the measurement of an interior angle

Eis the midpoint of line segment ac and bd also line segment ed is congruent to ec prove that line segment ae is congruent to line segment be