G.GCO.9 Acute Angles of a Right Triangle

Interact with the applet below for a minute or two. Then answer the questions that follow. (Feel free to move the triangle's BIG WHITE VERTICES anywhere you'd like.)


What is the sum of the measures of the 2 acute angles of any right triangle?


Given your response to (1) above, what adjective can you use to describe the relationship between these 2 acute angles?


Explain how/why this fact is an immediate result of the theorem you previously saw here (or here.)