Posted by Blanca on Tuesday, September 20, 2011 at 11:40pm.
Suppose right triangle ABC has one acute angle 47º. Suppose also that right triangle DEF has an acute angle 43º. How are triangles ABC and DEF related?

geometry  drwls, Wednesday, September 21, 2011 at 1:51am
A right triangle with an acute angle of 47 degrees must have a second acute angle of 43 degrees. Therefore the two triangles are similar. They both have the same angles of 90, 47 and 43 degrees.

geometry  busena, Friday, May 9, 2014 at 2:22am
Suppose right triangle ABC has one acute angle 47º. Suppose also that right triangle DEF has an acute angle 43º. How are triangles ABC and DEF related?
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