sum of all angles in a triangle is always 180. So 30 degrees, plus the right angle (90) = 120. 180-120 = 60
In a right triangle the greatest angle is 90 degrees.
a TRIANGLE THAT HAS A 90 DEGREE ANGLE A right triangle is a triangle that has exactly 90 degrees for one angle.
If the triangle has a 30 degree angle and a 60 degree angle then the 3rd angle must be a 90 degree angle because there are 180 degrees in a triangle and so therefore it is a right angle triangle.
Any triangle with a 90 degree angle is called a right triangle.
A right triangle is a triangle that contains a 90 degree angle, an obtuse triangle contains an angle that is from 91 degrees to 179 degrees.
right angle=90 degrees and a right triangle has one side of it that forms a 90 degree angle...as for the naming "right" don't know but it refers to 90 degree angle
A Right Triangle is a triangle that has one corner with a 90-degree angle. So a Right Angle is an angle of 90 Degrees or also known as Perpendicular angle.
A triangle with a 90 degree angle and two acute angles is a right angle triangle.
A right triangle has a 90 degree angle, and an obtuse triangle has an angle greater than 90 degrees
A right triangle has a 90 degree angle and an acute triangle has an angle smaller than 90 degrees.
since it is a right triangle there is one 90 degree angle and another of the angles is 45 degrees. there is 180 degrees in a triangle so the missing angle is 45 degrees.
A right triangle is a triangle in which one angle is equal to 90 degrees and the remaing two angles are acute(ie., less than 90 degree). so this triangle is a right angle triangle.