Answer:
<4 = 120
Step-by-step explanation:
You first need to set <1,<2, and <3 = to 180 since the area of a triangle = 180*
3x+4x+2x=180
9x=180
x=20
Next substitute 20 for x
3(20)=60
Then subtract 60 from 180 to find <4
120=<4
<1 and <4 are complimentary <s so they both add to 180, so we can use subtraction to find what <4 is = to.
