SECTION 5.4
pgs. 238 – 240
#6, 11 – 14, 19, 21
If the sum of the measures of the angles of a triangle is 180, what is the sum of
the measures of an angles in:
a. Quadrilateral?
b. Pentagon?
#21
a. How many diagonals does a triangle have?
b. How many diagonals does a quadrilateral have?
c. How many diagonals does a five sided polygon have?
d. How many diagonals does a six sided polygon have?
e. How many diagonals meet at one vertex of a polygon with n sides?
f. How many vertices does an n-sided polygon have?
g. How many diagonals does an n-sided polygon have?