emperor of Rome (284-305) who divided the Roman empire into east and west (286) in an attempt to rule the territory more effectively, appointed two rulers for each section with direct sub-rulers for each, appointed a co-emperor which lead to power struggle, army leader and the son of a slave who tried to restore order to the empire.
A right angle triangle always consists of one 90 degree angle, and every triangle must equal 180 degrees. Here is the work for this problem: 90 degrees (representing the right angle) + 50 degrees equals 140 degrees. 180 minus 140 equals 40. Therefore, the remaining angle would be 40 degrees.
You probably know that the sum of any triangle's angles is always 180 degrees. In an acute triangle, the sum of any two angles is always greater than 90 degrees. This is because in an acute triangle, no one angle can be greater than 89.999 degrees (and yes, those nines could go on forever). So the other two angles must add up to at least 180 minus 89.999 (or 90.001) degrees.