## Keywords, Theorems and Formulas

**Triangles and Parallelograms**

- Perimeter
- Area of a Rectangle:
- Perimeter of a Rectangle
- Perimeter of a Square:
- Area of a Square:
- Congruent Areas Postulate
- Area Addition Postulate
- Area of a Parallelogram:
- Area of a Triangle: or

**Trapezoids, Rhombi, and Kites**

- Area of a Trapezoid:
- Area of a Rhombus:
- Area of a Kite:

**Area of Similar Polygons**

- Area of Similar Polygons Theorem

**Circumference and Arc Length**

- Circumference: or
- Arc Length
- Arc Length Formula: length of or

**Area of Circles and Sectors**

- Area of a Circle:
- Sector
- Area of a Sector:
- Segment of a Circle

## Review Questions

Find the area and perimeter of the following figures. Round your answers to the nearest hundredth.

- square
- rectangle
- rhombus
- equilateral triangle
- parallelogram
- kite

Find the area of the following figures. Leave your answers in simplest radical form.

- triangle
- kite
- isosceles trapezoid
- Find the area and circumference of a circle with radius 17.
- Find the area and circumference of a circle with diameter 30.
- Two similar rectangles have a scale factor . If the area of the larger rectangle is , find the area of the smaller rectangle.

Find the area of the following figures. Round your answers to the nearest hundredth.

- find the shaded area (figure is a rhombus)

## Texas Instruments Resources

*In the CK-12 Texas Instruments Geometry FlexBook, there are graphing calculator activities designed to supplement the objectives for some of the lessons in this chapter. See http://www.ck12.org/flexr/chapter/9695.*

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## Date Created:

Feb 22, 2012## Last Modified:

Aug 21, 2014
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