a right triangle has only one angle that measures 90 degrees. Since all three angles need to add to 180, the other two must add up to 90, so, yes, you can have two other angles that are 65 and 25 since they add to 90; but they are not right angles, of course.
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Yes, it certainly can.
If it has either of those, then it must also have the other one as well, too.
Yes in a 90 45 45 triangle
Since the sum of the measures of the angles in a triangle is 180°, and a right angle has a measure of 90°, it follows that the other two angles together have a measure of 90°.
There are three angles in a triangle but to measure them you would use a protractor.
no. the angles in a triangle must add up to 180 degrees. The right triangles must have an right angle (90 degrees). If you add up all the angles they will not measure 180 degrees.
Use the pythagorean theorem.