The 4 classifications are:-
1 Acute angle which is greater than 0 but less than 90 degrees
2 Right angle which is 90 degrees
3 Obtuse angle which is greater than 90 but less than 180 degrees
4 Reflex angle which is greater than 180 but less than 360 degrees
A full rotation is 360 degrees
a vertex
An angle exceeding 180° is a reflex angle.
That would be an acute angle.
A square or a rectangle
There is no special name for a 120º angle.
1.tri- just like 3 2-Angle- just an angle thats classification for yas all lol
Degrees
The second angle? angle B?
An acute angle.
With a ray
Yes.
1899
"right angle" is two lines that intersect at 90 degrees "acute angle" is when 2 lines meet at less than 90 degrees "obtuse angle" is when lines meet at an angle more than 90 degrees , a straight angle is when 2 lines meet at exactly 180 degrees.
Obtuse.
An acute angle is smaller than a right angle.An obtuse angle is larger than a right angle.^_^
That's the "vertex" of the angle.
You can use the Law of Cosines- name the 3 sides side "a", side "b" and side "c". Then name the angle opposite side "a" angle A, call the angle opposite "b" angle B, and the angle opposite "c" angle C. Now... a^2=b^2+c^2- 2bc(cos(A)) solve for cosA and then for angle A, works the same for the other angles b^2=a^2+c^2- 2ac(cosB) c^2=a^2+b^2-2ab (cosC)