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Math Example--Solving Equations--Solving Equations Using Angle Properties: Example 7

Solving Equations Using Angle Properties: Example 7

Example 7: Parallel Lines Cut by a Transversal and same side interior angles

Topic

Equations

Description

This example demonstrates solving equations using angle properties, specifically focusing on parallel lines cut by a transversal and same side interior angles. When parallel lines are cut by a transversal, same side interior angles are supplementary, meaning they sum to 180°. 

In this scenario, we have one known angle of 112° and an unknown angle x. The 112° angle is vertical to the same side interior angle paired with x. The equation can be set up as: 

112 + x = 180

To solve for x, we subtract 112 from both sides: x = 68°. 

This method of solving angle equations relies on understanding geometric properties of parallel lines and applying basic algebraic techniques. It's crucial to recognize various angle relationships formed by parallel lines and transversals, such as alternate interior angles, corresponding angles, and same side interior angles. By identifying these relationships, we can formulate equations and solve for unknown angles. This process not only reinforces geometric concepts but also strengthens algebraic problem-solving skills. In practical applications, such problems are essential in fields like road construction, railway design, and computer-aided drafting, where understanding and calculating angles formed by parallel structures is crucial for efficient and accurate design.

For a complete collection of math examples related to Equations Using Angle Properties click on this link: Math Examples: Equations Using Angle Properties Collection.

Common Core Standards CCSS.MATH.CONTENT.HSG.CO.C.10, CCSS.MATH.CONTENT.HSA.CED.A.1
Grade Range 9 - 11
Curriculum Nodes Algebra
    • Expressions, Equations, and Inequalities
        • Applications of Equations and Inequalities
Geometry
    • Angles and Planes
        • Definition of an Angle
Copyright Year 2022
Keywords angles, solving equations