Math Problem Statement

In the diagram, PQR is a straight line. Calculate the values of x and y.

Solution

To solve the problem provided in the diagram, we will calculate the values of xx and yy step by step. Here is how we approach it:

Key Observations:

  1. PQRPQR is a straight line, meaning the angles around QQ on that line sum to 180180^\circ.
  2. The given angles include:
    • An interior angle 118118^\circ at QQ (straight line).
    • Two other angles, yy and an exterior angle xx, are indicated.

Step 1: Calculate yy

Since PQRPQR is a straight line: 118+y=180118^\circ + y = 180^\circ Solving for yy: y=180118=62y = 180^\circ - 118^\circ = 62^\circ

Step 2: Calculate xx

In the triangle formed (labeled PQR\triangle PQR), the angles of a triangle sum to 180180^\circ. Using the triangle and knowing one of its angles is y=62y = 62^\circ, and the marked angle at RR is 118118^\circ: x+62+118=180x + 62^\circ + 118^\circ = 180^\circ Solving for xx:

!!!In CORRECTION Adjustment termsTo solve for $$x$$ and $$y$$, let's break the problem down based on the given diagram and angles: ### Observations: 1. $$PQR$$ is a straight line, so the sum of the angles around $$Q$$ on the line must equal $$180^\circ$$. 2. The angles in the triangle $$\triangle PQR$$ must sum to $$180^\circ$$. ### Step 1: Calculate $$y$$ From the straight-line property: \[ y + 118^\circ = 180^\circ$$ Solving for $$y$$: $$y = 180^\circ - 118^\circ = 62^\circ$$ ### Step 2: Calculate $$x$$ Now, consider the triangle $$\triangle QRP$$. The sum of the angles in the triangle equals $$180^\circ$$: $$x + 62^\circ + 118^\circ = 180^\circ$$ Simplify and solve for $$x$$: \[ x = 180^\circ - 62^\circ - 118^\circ = 0^\circ

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Math Problem Analysis

Mathematical Concepts

Angles on a straight line
Sum of angles in a triangle

Formulas

Angles on a straight line sum to 180°: a + b = 180°
Sum of angles in a triangle equals 180°: a + b + c = 180°

Theorems

Straight Angle Theorem
Triangle Angle Sum Theorem

Suitable Grade Level

Grades 7-9