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In the figure, ∠1 and ∠2 are supplementary. If m∠1 is 24° more than 2 times m∠2 , find the measures of ∠1 and ∠2 .

1 Answer

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Answer:

m∠1 = 128°

m∠2 = 52°

Explanation:

We can find the measures of angles 1 and 2 using a system of equations, where:

  • x represents the measure of ∠1,
  • and y represents the measure of ∠2.

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First equation:

  • Supplementary angles form straight angles.
  • This means that the sum of supplementary angles is 180°.

Thus, our first equation is given by:

x + y = 180

Second equation:

Since m∠1 is 24° that 2 times m∠2, our second equation is given by:

x = 2y + 24

Method to solve: Substitution:

Solving for y (i.e., the measure of angle 2):

Now, we can solve for y by substituting 2y + 24 for x in first equation (i.e., x + y = 180):

2y + 24 + y = 180

(3y + 24 = 180) - 24

(3y = 156) / 3

y = 52

Therefore, the measure of angle 2 is 52°.

Solving for x (i.e., the measure of angle 1):

Now, we can solve for x by plugging in 52 for y in the first equation (i.e., x + y = 180):

(x + 52 = 180) - 52

x = 128

Therefore, the measure of angle 1 is 128°.

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