Solve for X
4x+12=20
x=2
△ABC=
△CBA
33
27
Below 90 Degree Angle
Acute Angle
3,9 -> 9,27
3
9x+36=90
x=6
△ABCDE=
△EDCBA
43
64
Above 90 Degree Angle
Obtuse Angle
5,15 -> 20,60
4
6x+12=24+2x
△ABCD D=
A
64
1296
90 Degree Angle
Right Angle
16,13 -> 80,65
5
4x+3=-5x+21
x=2
△ABCDEF B=
E
98
43046721
Adds up to 180 Degrees
Supplementary Angle
19,12 -> 152,96
8
-2x(2)+73(2)=-89
x=58.25
△ABCDEFG C=
E
129
5159780352
Adds up to 90 Degrees
Complementary Angles
14,21 -> 154,231
11