APPLICATIONS
- QUADRILATERALS IN EVERYDAY LIFE What
quadrilateral shape do you see in each of the
following objects?
a. podium (upper portion) b. checkerboard
c. dollar bill d. swimming fine. camper shell window- FLOWCHART A flowchart
shows a sequence of steps to be
performed by a computer to
solve a given problem. When
designing a flowchart, the
programmer uses a set of
standardized symbols to
represent various operations to
be performed by the computer.
Locate a rectangle, a rhombus,
and a parallelogram in the
flowchart shown to the right.
55. BASEBALL Refer to the
figure to the right. Find the
sum of the measures of the
angles of home plate.
56. TOOLS The utility knife
blade shown below has the
shape of an isosceles
trapezoid. Find , , and.
WRITING
- Explain why a square is a rectangle.
- Explain why a trapezoid is not a parallelogram.
- MAKING A FRAME
After gluing and nailing the
pieces of a picture frame
together, it didn’t look right
to a frame maker. (See the
figure to the right.) How
can she use a tape measure
to make sure the corners are 90° (right) angles? - A decagon is a polygon with ten sides. What could
you call a polygon with one hundred sides? With one
thousand sides? With one million sides?
REVIEW
Write each number in words.- 254,309
1 in.(^1) –
4
2 in.^3 – 8
(^3) –
4
x in.
65 ° y
z
xy z
776 Chapter 9 An Introduction to Geometry
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