1. find the sum of the measures of exterior angles, one at each vertex, of an octagon.
a. 180*
b. 360*
c. 1080*
d. 1440*

2. if the sum of the interior angles of a polygon is 900* ( * = degrees) , then how many sides does the polygon have?
a. 6
b. 7
c. 8
d. 9
10. based on the information given, can you determine that the quadrilateral must be a parallelogram? explain.
11. the parallelogram has the angle measures shown. can you conclude that it is a rhombus, rectangle, or a square? explain.

37 = ending with 7

unit's digit in the cube..3

56 = ending with 6

unit's digit in the cube..2

133 = ending with

unit's digit in the cube..7

hope it : ( : )

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x