A rhombus is a type of quadrilateral in which all four sides are of equal length. It is also a parallelogram, which means that opposite sides are parallel and equal in length, and opposite angles are equal.

- All sides of a rhombus are of equal length.
- Opposite angles of a rhombus are equal.
- Diagonals of a rhombus bisect each other at right angles.
- The diagonals of a rhombus are perpendicular to each other and bisect the angles of the rhombus.

Some useful formulas for a rhombus:

Calculate the area and perimeter of a rhombus with side length 6 units and diagonals measuring 8 units and 10 units.

Area = (8 * 10) / 2 = 40 square units

- Find the area of a rhombus with side length 9 units and diagonals measuring 12 units and 15 units.
- Calculate the perimeter of a rhombus with side length 7 units.

In conclusion, a rhombus is a special type of quadrilateral with unique properties and formulas for calculating its area and perimeter.

.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.