An angle is a geometric figure formed by two rays that extend from the same point, called the vertex. Angles are measured in degrees, and they are used to measure the amount of rotation or turn between two rays.

**Acute Angle:**An angle whose measure is between 0 and 90 degrees.**Right Angle:**An angle whose measure is exactly 90 degrees.**Obtuse Angle:**An angle whose measure is between 90 and 180 degrees.**Straight Angle:**An angle whose measure is exactly 180 degrees.**Reflex Angle:**An angle whose measure is between 180 and 360 degrees.

Angles are measured in degrees, and a protractor is used to measure and draw angles. The symbol for degrees is °.

There are several important angle relationships to understand, including complementary angles (two angles that add up to 90 degrees), supplementary angles (two angles that add up to 180 degrees), and vertically opposite angles (pairs of angles formed by two intersecting lines).

Angles have properties that affect their relationships with other angles and geometric figures, such as parallel lines, triangles, and polygons.

1. What type of angle is formed when the measure is 45 degrees?

Answer: An acute angle.

2. If one angle measures 60 degrees, what is the measure of its complement?

Answer: The complement of a 60-degree angle is 30 degrees.

- Practice using a protractor to measure and draw angles.
- Understand the properties and relationships of angles in various geometric figures.
- Look for real-life examples of angles in the environment to reinforce understanding.
- Practice identifying and classifying angles in different contexts.

Understanding angles is essential for geometry and various other fields of mathematics and science. Mastering the concept of angles will provide a solid foundation for more advanced topics in the future.

.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.