Math Problem Statement

Find the value of x in the given isosceles triangle where one angle is 32° and the other two angles are (x + 4)° each.

Solution

In this image, we see a triangle where two sides are marked as congruent (indicated by the hash marks), making this an isosceles triangle.

The angles opposite these congruent sides are also congruent. One angle is labeled as 3232^\circ, and the other is labeled as x+4x + 4.

To find the value of xx, follow these steps:

  1. Since the sum of the interior angles in any triangle is always 180180^\circ, we can write the equation:

    32+(x+4)+(x+4)=18032^\circ + (x + 4)^\circ + (x + 4)^\circ = 180^\circ

  2. Simplify the equation:

    32+2(x+4)=18032^\circ + 2(x + 4) = 180^\circ

    32+2x+8=18032^\circ + 2x + 8 = 180^\circ

  3. Combine like terms:

    40+2x=18040^\circ + 2x = 180^\circ

  4. Subtract 40 from both sides:

    2x=1402x = 140^\circ

  5. Finally, divide by 2:

    x=70x = 70^\circ

So, the value of xx is 70 degrees.

Would you like more details or have any questions?

Here are some related questions for further practice:

  1. What is the sum of all interior angles in a quadrilateral?
  2. How do you find the missing angle in a right triangle?
  3. How does knowing that a triangle is isosceles help solve problems?
  4. What are the properties of an equilateral triangle?
  5. Can an isosceles triangle have a right angle?

Tip: Always remember that the sum of interior angles in any triangle is 180180^\circ, which is useful when solving problems involving triangles.

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Math Problem Analysis

Mathematical Concepts

Triangle geometry
Angle sum property
Isosceles triangles

Formulas

Sum of angles in a triangle = 180°

Theorems

Isosceles triangle theorem
Angle sum theorem

Suitable Grade Level

Grades 8-10