An acute angle.
A right angle
If you're talking about a triangle, the third angle is 80 degrees.
an angle that measures less than 80 degrees
80
No, 80 degrees is not obtuse; it is classified as an acute angle. An obtuse angle is defined as one that measures more than 90 degrees but less than 180 degrees. Since 80 degrees is less than 90 degrees, it falls into the acute category.
Right angle
A right angle
If you're talking about a triangle, the third angle is 80 degrees.
an angle that measures less than 80 degrees
80
80 degrees.
The 3rd angle is: 180-55-80 = 45 degrees
the angle measures of a quadrilateral must equal 360 degrees so you add 80+140+55=275 then subtract from 360. the answer is 85
Supplementary angles add up to 180 degrees so it is 100 degrees
Any angle between 0 degrees and 90 degrees is called an "acute" angle.
A protractor measures degrees: 90, 80, 120 etc. If something is 90 degrees it is at a right angle
Let the angle be A, then the supplementary angle is (180 - A) and the complementary angle is (90 - A). But, 180 - A = 10(90 - A) = 900 - 10A 9A = 720 A = 80° The supplementary angle = 100° and the complementary angle = 10°