Isosceles triangle PQR in which PQ = PR = 45 mm and PQR = 20° Picture​

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

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

If the segment op is dilated by a scale factor r=2, what is the length of segment op? a)10cm b)16cm c)6cm d)4cm