Respuesta :

contactcshamp

Answer:

A. 30°

Step-by-step explanation:

The interior angles of a triangle ALWAYS add up to 180°. So, for this, you would use 100 + 50 + x = 180 and solve for x :)

Space

Answer:

A. 30°

General Formulas and Concepts:

Pre-Alg

  • Equality Properties

Geometry

  • All angles in a triangle add up to 180°.

Step-by-step explanation:

Step 1: Set up equation

x + 100 + 50 = 180

Step 2: Solve for x

  1. Combine like terms:                    x + 150 = 180
  2. Subtract 150 on both sides:        x = 30°

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