Math Problem Statement

The measures of the angles of the triangle are indicated in terms of x. Find the measure of angle A.

Solution

The image shows a triangle with angle measures indicated in terms of xx. Specifically:

  • A=4x10\angle A = 4x - 10
  • B=x\angle B = x
  • C=x+16\angle C = x + 16

To find the measure of A\angle A, we will use the fact that the sum of the interior angles of a triangle is always 180 degrees. Therefore, the equation is:

(4x10)+x+(x+16)=180(4x - 10) + x + (x + 16) = 180

Let me solve this equation step by step.

  1. Combine like terms: 6x+6=1806x + 6 = 180

  2. Subtract 6 from both sides: 6x=1746x = 174

  3. Divide by 6: x=29x = 29

Now that we know x=29x = 29, we can substitute this value back into the expression for A\angle A:

A=4x10=4(29)10=11610=106\angle A = 4x - 10 = 4(29) - 10 = 116 - 10 = 106^\circ

Thus, the measure of A\angle A is 106106^\circ.

Would you like further explanation or details?

Related Questions:

  1. How can you find the measures of B\angle B and C\angle C?
  2. Why does the sum of the angles in a triangle always equal 180 degrees?
  3. What types of triangles exist based on angle measures?
  4. How would the equation change if the triangle was not a right triangle?
  5. Can you classify this triangle based on the given angle measures?

Tip:

Always check the sum of your angle measures when working with triangles to ensure they add up to 180°.

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Math Problem Analysis

Mathematical Concepts

Algebra
Geometry
Angles in a Triangle

Formulas

Sum of angles in a triangle = 180°
Equation: (4x - 10) + x + (x + 16) = 180

Theorems

Sum of interior angles of a triangle

Suitable Grade Level

Grades 7-9