How to Find the Degree of an Angle in a Triangle Using the Angle-Sum Property

Learn how to find an unknown angle in a triangle by applying the angle-sum property where all angles add up to 180 degrees.

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To find the degree of an angle in a triangle, you can use the angle-sum property. The sum of all angles in a triangle is 180 degrees. If you know the other two angles, subtract their sum from 180. For example, if one angle is 50° and another is 60°, the remaining angle is 180° - (50° + 60°) = 70°.

FAQs & Answers

  1. What is the angle-sum property of a triangle? The angle-sum property states that the sum of all interior angles in any triangle is always 180 degrees.
  2. How do I find the missing angle in a triangle if I know the other two angles? Add the two known angles and subtract their sum from 180 degrees to find the missing angle.
  3. Can I use the angle-sum property for all types of triangles? Yes, the angle-sum property applies to all triangles, whether they are scalene, isosceles, or equilateral.

Watch More

For more on triangle geometry and angle calculations, explore our videos on the Pythagorean theorem, types of triangles, and how to calculate perimeter and area. These resources will deepen your understanding of fundamental math concepts.

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