Polygons are two‐dimensional shapes that are formed by three or more straight sides. You will be analyzing these geometric figures to find the total degree value of a polygon, the perimeter of a polygon, and the area of a polygon.

- The
**perimeter**is the measurement of the sum of the side lengths of a polygon. - The
**area**is the measurement of the inner portion of the polygon.

- A triangle has a base length of 4cm and a height of 5cm. What is the area of the triangle?
- A square has an area of 16cm
^{2}. What is the side length of the square? - A trapezoid has base lengths of 4 and 7, slanted side lengths of 5, and a height of 3. What is the perimeter of the trapezoid?
- A shape has two pairs of parallel sides, angle measurements adding to 360°, and four right angles. What shape is most accurately described?
- a) square
- b) Parallelogram
- c) rectangle
- Rhombus

- A regular polygon has 7 sides. What is the measure of the polygon's angles?

**Answers to Practice Problems**

- 10 cm
^{2} - 4 cm
- 21
- C
- 900°

**Answers to ISEE Practcie Problems**

- 4
- 130
- B
- D
- D

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