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Math Example--Solving Equations--Solving Equations with Angle Measures 2--Example 9

Solving Equations with Angle Measures 2--Example 9

Rhombus with angles 4x°, 2x°, 4x°, and 2x°

Topic

Equations

Description

This example demonstrates solving equations involving angle measures in a rhombus. The rhombus has angles represented as 4x°, 2x°, 4x°, and 2x°. To solve this problem, we apply two key principles: the sum of angles in a quadrilateral is 360°, and opposite angles in a rhombus are congruent. We can set up the equation: 4x° + 2x° + 4x° + 2x° = 360°. Simplifying, we get 12x° = 360°. Dividing both sides by 12, we find x° = 30°. Therefore, the angles of the rhombus are 120°, 60°, 120°, and 60°. This problem showcases the properties of a rhombus, particularly that its angles occur in congruent pairs and that adjacent angles are supplementary. It challenges students to translate geometric properties into algebraic expressions and solve equations. Such problems are crucial in developing analytical thinking and reinforcing the connection between algebra and geometry. They prepare students for more advanced concepts in mathematics, where understanding the interplay between different branches of mathematics becomes increasingly important.

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

Common Core Standards CCSS.MATH.CONTENT.8.G.A.5, CCSS.MATH.CONTENT.HSG.CO.C.10, CCSS.MATH.CONTENT.7.EE.B.4.A, CCSS.MATH.CONTENT.7.G.B.5
Grade Range 8 - 10
Curriculum Nodes Algebra
    • Expressions, Equations, and Inequalities
        • Solving Multistep Equations
Geometry
    • Quadrilaterals
        • Applications of Quadrilaterals
Copyright Year 2020
Keywords quadrilaterals, equations