180=51+2x+3+4x+8
180=51+11+6x
180=62+6x
-62 -62
-----------
118=6x
---------
6x 6x
x=17
exterior angle = 4x+8
4(17) + 8
68 + 8
76
The answer is D5x4 is 20 +20 from already on his MP3 player =40
Axis of symmetry is (2,2), or just 2 (depending on how your teacher takes it.)
Answer: 42 (apex)
Step-by-step explanation: