Math Problem Statement

Find the values of x and y with the properties of parallel lines and transversal

Find the values of x and y with the properties of parallel lines and transversal.

Solution

To find the values of xx and yy in this triangle, we can use the properties of parallel lines and angles.

  1. Identify the Parallel Lines and Transversal:

    • The two lines ABAB and DCDC appear to be marked as parallel (indicated by the arrow notation on both sides).
    • ADAD acts as a transversal between these parallel lines.
  2. Using Corresponding Angles:

    • Since ABDCAB \parallel DC and ADAD is a transversal, angle BADBAD (which is xx) is equal to angle EDCEDC, due to the property of corresponding angles. Therefore, we have: x=63x = 63^\circ
  3. Using the Angle Sum of a Triangle:

    • Now, look at triangle ABDABD. The sum of angles in a triangle is 180180^\circ.
    • We know: ADB=90(since it’s marked as a right angle)\angle ADB = 90^\circ \quad \text{(since it's marked as a right angle)}
    • Therefore, in ABD\triangle ABD: BAD+ABD+ADB=180\angle BAD + \angle ABD + \angle ADB = 180^\circ x+x+90=180x + x + 90^\circ = 180^\circ 2x=902x = 90^\circ x=45x = 45^\circ

    After revisiting, the answer

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Math Problem Analysis

Mathematical Concepts

Geometry
Angles in Parallel Lines
Angle Sum in Triangles

Formulas

Angle Sum of Triangle: ∠A + ∠B + ∠C = 180°

Theorems

Corresponding Angles in Parallel Lines
Angle Sum Theorem

Suitable Grade Level

Grades 8-10