Math Problem Statement

Hvað er hornið x stórt? (°) Gefið er: y = 32°

Hvað er hornið x stórt? (°) Gefið er: y = 32°

Solution

Let's analyze the given diagram and solve for angle xx.

Step-by-Step Solution:

  1. Identify Angles in the Triangle:

    • In the triangle on the left side, there are three angles. Let's label them based on the image:
      • 2x2x (at the bottom left of the triangle),
      • xx^\circ (at the top of the triangle),
      • xx^\circ (at the bottom right of the triangle, adjacent to yy^\circ).
  2. Sum of Angles in a Triangle:

    • The sum of the interior angles in a triangle is always 180180^\circ.
    • Therefore, we can write the equation for the triangle as: 2x+x+x=1802x + x + x = 180^\circ
    • Simplifying this gives: 4x=1804x = 180^\circ
    • Dividing both sides by 4: x=45x = 45^\circ

Thus, the angle xx is 4545^\circ.

Would you like a more detailed explanation, or do you have further questions?

Follow-up Questions

  1. What is the measure of angle 2x2x given that x=45x = 45^\circ?
  2. If y=32y = 32^\circ, what is the total angle where xx and yy meet on the right side?
  3. How would the solution change if yy were a different value?
  4. Can we use the exterior angle theorem in this problem?
  5. How does this problem illustrate the properties of angle sums in triangles?

Tip:

Always remember that the sum of the interior angles in any triangle is 180180^\circ. This rule is fundamental for solving problems involving unknown angles in triangles.

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Math Problem Analysis

Mathematical Concepts

Geometry
Angle Sum in Triangles
Linear Pair of Angles

Formulas

Sum of angles in a triangle: a + b + c = 180°

Theorems

Triangle Angle Sum Theorem

Suitable Grade Level

Grades 7-9