What is the interior degree measure of angle $A$? [asy]
/* AMC8 1999 #21 Problem */
label("$A$", (0,104), W);
draw((0,104)--(161,104)--(37,0)--(64,151)--(140,24)--cycle);
label(scale(0.6)*"100", (62, 98));
label(scale(0.6)*"110", (95, 56));
label(scale(0.6)*"40", (45, 15));
draw(circle((51, 18), 1));
draw(circle((70, 101), 1));
draw(circle((103, 59), 1));
[/asy]
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
What is the interior degree measure of angle $A$? [asy]
/* AMC8 1999 #21 Problem */
label("$A$", (0,104), W);
draw((0,104)--(161,104)--(37,0)--(64,151)--(140,24)--cycle);
label(scale(0.6)*"100", (62, 98));
label(scale(0.6)*"110", (95, 56));
label(scale(0.6)*"40", (45, 15));
draw(circle((51, 18), 1));
draw(circle((70, 101), 1));
draw(circle((103, 59), 1));
[/asy]
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
30^\circ
What is the interior degree measure of angle $A$? [asy]
/* AMC8 1999 #21 Problem */
label("$A$", (0,104), W);
draw((0,104)--(161,104)--(37,0)--(64,151)--(140,24)--cycle);
label(scale(0.6)*"100", (62, 98));
label(scale(0.6)*"110", (95, 56));
label(scale(0.6)*"40", (45, 15));
draw(circle((51, 18), 1));
draw(circle((70, 101), 1));
draw(circle((103, 59), 1));
[/asy]
train