Oh, dude, 69 degrees is an acute angle. It's less than 90 degrees, so it's not gonna be making any right turns anytime soon. But hey, at least it's not as obtuse as some people's sense of humor, am I right?
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Yes, 69 degrees is less than a right angle. A right angle measures exactly 90 degrees, so any angle less than 90 degrees, such as 69 degrees, is considered acute. In this case, 69 degrees is closer to 0 degrees (a straight angle) than it is to 90 degrees.
If it is an isosceles triangle then the base angles must be equal angles of 69 degrees because there are 180 degrees in a triangle and 42+69+69 = 180 degrees
one angle will be 69 degrees while the other angle will be 111 degrees.
When an angle has a measure of 120 degrees, it is an obtuse angle. When an angle is an obtuse angle its measure is between 90 and 180 degrees. That is: 90 degrees < obtuse angle < 180 degrees.
An angle that measures 142 degrees is classified as an obtuse angle. In geometry, an obtuse angle is an angle that is greater than 90 degrees but less than 180 degrees. It falls between a right angle (90 degrees) and a straight angle (180 degrees).