·.B ~ 8 ctil.' Calculate ~ach of the following.
ct fonn and to the ·
f th shaded region at right (5).
2. Calculate the area O e ·
3. Plot and connect the points S(-1, 3), T(2, 5), A(4, -3), R(l, -5) to form quadrilateral STAR (6).
a. What shape is ST Al(!
Use tots of evidence found on the graph to justify your
b. What is the area of ST AR?
Show aJl work.
3. Use what you know about interior and exterior angles of a polygon to find (5):
a. The sum of the measures of the angles in a 74-gon.
b. The number of sides of an n-gon if the sum of the interior angles is 2700°.
c. The number of sides of a regular n-gon if one exterior angle measures 40°.
d. If each exterior angle on a regular polygon has a measure of 12°, how many sides
will the polygon have?
4. Use what you know about interior and exterior angles of a polygon to find (6):
a Calculate the sum of the m
(a) is correct.
5. Find the value of x in the polygon to the right (5).
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