Angle Name
90 degree
right angle
Rectangle with base 5 and height 10
50
3x=12
4
O=2, H=3 what is the angle?
41.8
A=3, O=10, what is H?
10.4
180 degree
straight angle
triangle with base 4 and height 6
12
x/3=5
15
A=4, H=10, what is the angle?
66.4
H=17, 0=2 what is A?
16.9
smaller than 90 degree
acute
perimeter of circle and diameter is 10
31.4
12/x=3
4
O=12, A=10 What is the angle?
50.2
Angle 56, O=4, what is H?
It's sine, so 4.8
bigger than 90 degree
obtuse
area of circle and radius is 2
12.56
112/x=56
2
A=3, O=5 the angle?
It's tangent, so 59
Angle is 77, h=11 what is A?
It's cosine, so 2.5
bigger than 180 degree
reflex
area of circle and diameter is 5
19.625
x/560=140
78400
O=3, A=4, H=5. what is the angle?
36.9
Angle is 56, A is 5 what is O?
It's tangent, so 7.4