interior angle of n-gon formula: 180 - ( 360 / n)
a 30 sided polygon, so in this case n = 30
so
interior angle = 180 - ( 360 / 30)
interior angle = 180 - 12
interior angle = 168
answer
168 degrees
Keywords:
<em>lines, plane, parallel
</em>
For this case we have five lines in a plane, and they ask us to find which of the four remaining lines is parallel to the line "r". We know that, by definition, two lines are parallel when they meet in the same plane, they maintain a certain distance between them, that is, if both prologue to infinity, they never intersect. Thus, the line parallel to line "r" must be line "s".
Answer:
The line parallel to the line "r" is the line "s"
2. Combine like terms
3.subtraction property of equality
4.division property of equality
5. Reflexive property