Math Problem Statement

Find the measure of angle labeled '?' in the given diagram with triangle angle measures 37°, 52°, 62°, and 85°.

Solution

To solve for m?m \angle ?, we need to use geometric relationships, particularly focusing on triangle angle sum properties and linear pairs of angles.

Step-by-Step Solution:

  1. The sum of angles in a triangle is always 180180^\circ. Therefore, we can use this property for the two visible triangles.

Left Triangle:

  • The angles are 3737^\circ, 8585^\circ, and the third unknown angle (let's call it xx).
  • The sum of angles in this triangle is 180180^\circ, so: 37+85+x=18037^\circ + 85^\circ + x = 180^\circ Solving for xx: x=180(37+85)=180122=58x = 180^\circ - (37^\circ + 85^\circ) = 180^\circ - 122^\circ = 58^\circ

Right Triangle:

  • The angles are 5252^\circ, 6262^\circ, and the unknown angle (let's call it yy).
  • The sum of angles in this triangle is 180180^\circ, so: 52+62+y=18052^\circ + 62^\circ + y = 180^\circ Solving for yy: y=180(52+62)=180114=66y = 180^\circ - (52^\circ + 62^\circ) = 180^\circ - 114^\circ = 66^\circ

Solving for m?m \angle ?:

  • The angle labeled ?? forms a vertical pair with x=58x = 58^\circ (from the left triangle).
  • Vertical angles are congruent, so: m?=58m \angle ? = 58^\circ

Thus, the measure of ?\angle ? is 58\boxed{58^\circ}.

Would you like more details or clarification on any step?


Here are some related questions you could explore:

  1. How do vertical angles help in solving geometric problems?
  2. What is the angle sum property of a triangle, and how is it applied?
  3. How do we find angles in polygons other than triangles?
  4. How can supplementary angles help in geometry problems?
  5. Can this problem be solved using alternate methods such as parallel line angles?

Tip: Always remember that the sum of angles in any triangle is 180180^\circ, which is key to solving many geometry problems.

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Math Problem Analysis

Mathematical Concepts

Geometry
Triangles
Vertical Angles
Angle Sum Property

Formulas

Sum of angles in a triangle = 180°
Vertical angles are congruent

Theorems

Triangle Angle Sum Theorem
Vertical Angles Theorem

Suitable Grade Level

Grades 8-10