Geometry
Guided Notes
Area and Perimeter
Perimeter
Name: ______________________________
Date: ___________________ Period: ____
perimeter - the sum of the _________________ of the _________________ of a polygon (perimeter is a linear
measurement).
Example #1: Find the perimeter.
Example #2: Find the perimeter.
Example #3: Find the perimeter.
Example #4: Find the perimeter.
Geometry
Guided Notes
Area and Perimeter
Name: ______________________________
Date: ___________________ Period: ____
Area
area - the number of ________________________________ contained in the interior of a polygon (area is
measured in square units ex: ft2)
Example #5: Estimate the area first, then calculate the area.
Using Formulas to find Area
When formulas refer to base and height, the Height is segment perpendicular to the base!
A – is area
b – is base
Area of a Triangle
A = ½ bh
Area of a Trapezoid
)
A= (
h – is height
L – is length
Area of a Rectangle/Square
A = bh
w – is width
Area of a Parallelogram
A = bh
Area of a Kite/Rhombus
A = ½ d1d2
See your formula sheet for additional formulas for area!
Example #6: Find the area.
Example #7: Find the area.
Geometry
Guided Notes
Area and Perimeter
Example #8: Find the area.
Name: ______________________________
Date: ___________________ Period: ____
Example #9: Find the area.
Example #10: Find the area.
Example #11: Find the area.
Example #12: Find the area.
Example #13: Find the area.
Example #14: Find the area.
Example #15: Find the area.
Geometry
Name: ______________________________
Guided Notes
Area and Perimeter
Date: ___________________ Period: ____
Area Addition Postulate: The area of a region is the sum of the areas of its nonoverlapping parts.
Example #16: Find the area.
Example #17: Find the area.
Example #18: Find the area of the polygon.
Example #19: Find the area of the polygon.
Geometry
Guided Notes
Area and Perimeter
Finding the Area of Shaded Regions
Example #20: Find the area of the shaded region.
Example #21: Find the area of the shaded region.
Example #22: Find the area of the shaded region.
Example #23: Find the area of the shaded region.
Name: ______________________________
Date: ___________________ Period: ____
Geometry
Guided Notes
Area and Perimeter
Example #24: Find the area of the square.
Name: ______________________________
Date: ___________________ Period: ____
Example #25: The quadrilateral has an area of 72 ft2. Solve for x.