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Help help help math math math math

Help help help math math math math-example-1
User Laurens Rietveld
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2 Answers

9 votes
9 votes

Answer:

66

Explanation:

1. The exterior angle theorem states that the measure of an exterior angle of a triangle is congruent to the sum of the two opposite interior angles.

  • Basically, exterior angle = opposite interior angle + opposite interior angle

2. Now, let's see what information we have so far, and what we don't have.

  • m∠4 is 124 degrees, is the exterior angle
  • The angle with 58 degrees is one of the opposite interior angles
  • ∠2 is the other opposite interior angle, but we don't know its measure

3. Now, let's set up the equation and solve it.

Step 1: Set up the equation.


  • 124 = x + 58

Step 2: Subtract 58 from both sides.


  • 124-58=x+58-58

  • 66 = x

Step 3: Check if solution is correct.


  • 124=66+58

  • 124=124

Therefore, the answer is 66.

User Dsfgsho
by
2.5k points
17 votes
17 votes

Answer:

66 degrees.

Explanation:

angle 4 is 124, and angle 1 and 4 make 180 degrees. that means angle 1 is 56 degrees (180-124). and the total angle in a triangle is also 180 degrees.

Add 56 and 58, you'd get 114.

180-114=66

angle 2=66 degrees.

User Delian Krustev
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3.6k points