A pentagon is a polygon with five sides and five angles. In a regular pentagon, all sides and angles are equal.

**Number of Sides:**A pentagon has 5 sides.**Number of Angles:**A pentagon has 5 angles.**Sum of Interior Angles:**The sum of the interior angles of a pentagon is 540 degrees.**Sum of Exterior Angles:**The sum of the exterior angles of a pentagon is always 360 degrees.**Types of Pentagons:**There are regular and irregular pentagons. In a regular pentagon, all sides and angles are equal, while in an irregular pentagon, the sides and angles can have different measures.

For a regular pentagon:

**Perimeter:**P = 5 * s (where s is the length of each side)**Interior Angle:**A = 108°**Apotem:**a = s / (2 * tan(π/5))**Area:**A = (5/2) * a * s (where a is the apotem)

- Calculate the perimeter of a regular pentagon with each side measuring 8 cm.
- Find the measure of each interior angle of a regular pentagon.
- Determine the area of a regular pentagon with a side length of 10 cm.

By understanding the properties and formulas of a pentagon, you can solve problems and calculations related to this geometric shape.

.Study GuideAlgebraic Equations Worksheet/Answer key

Algebraic Equations Worksheet/Answer key

Algebraic Equations Worksheet/Answer key

Algebraic Equations Worksheet/Answer keyAlgebraic Equations Worksheet/Answer key

Algebraic Equations Worksheet/Answer keyAlgebraic Equations

Algebra (NCTM)

Represent and analyze mathematical situations and structures using algebraic symbols.

Recognize and generate equivalent forms for simple algebraic expressions and solve linear equations

Grade 6 Curriculum Focal Points (NCTM)

Algebra: Writing, interpreting, and using mathematical expressions and equations

Students write mathematical expressions and equations that correspond to given situations, they evaluate expressions, and they use expressions and formulas to solve problems. They understand that variables represent numbers whose exact values are not yet specified, and they use variables appropriately. Students understand that expressions in different forms can be equivalent, and they can rewrite an expression to represent a quantity in a different way (e.g., to make it more compact or to feature different information). Students know that the solutions of an equation are the values of the variables that make the equation true. They solve simple one-step equations by using number sense, properties of operations, and the idea of maintaining equality on both sides of an equation. They construct and analyze tables (e.g., to show quantities that are in equivalent ratios), and they use equations to describe simple relationships (such as 3x = y) shown in a table.