Are the two triangles scaled copies of each other?

Question

Use the angle measures to decide whether the two triangles are scaled copies. Explain. 

 

Triangle G: 45*, 45*

Triangle H: 45*, 90*

 

Triangle P: 79*,81*

Triangle Q: 81*, 20*

Answer 1

By computing the 3rd angle of triangles G & H, you can see that their angular makeups are identical, so YES they're similar (i.e. scaled copies).

 

In the second pair, NO.