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Sunny_sXe [5.5K]
3 years ago
5

In the figure, m<2=92 and m<12=74. Find the measure of each angle. Tell which postulate (s) or theorem (s) you used.

Mathematics
2 answers:
kvasek [131]3 years ago
8 0

Answer:

\angle 10=92\°\\\angle 8 = 92\°\\\angle 9=88\°\\\angle 5=106\°\\\angle 11 = 106\°\\\angle 13 = 106\°

Step-by-step explanation:

In the figure m \parallel n, and <em>r </em>and <em>s </em>are transversal that intercept those parallels.

Now, from the each interception of each transversal we have 8 angles related.

\angle 1, \angle 2, \angle 7, \angle 8, \angle 9, \angle 10, \angle 16, \angle 15, all these angles are related.

\angle 3, \angle 4, \angle 5, \angle 6, \angle 11, \angle 12, \angle 13, \angle 14, all these angles are related.

By corresponding angles, we have the following congruence

\angle 2 \cong \angle 10

This means that

\angle 10 = \angle 2= 92\°

\angle 9 = 180\° - \angle 10,  by supplementary angles.

\angle 9= 180\°-92\°=88\°

\angle 8 = \angle 2, by vertical angles theorem.

\angle 8= 92

\angle 5 = \angle 11, by alternate interior angles.

\angle 11=180\° - \angle 12, by supplementary angles.

\angle 11= 180\°-74\°=106\°

\angle 5=106\°

\angle 13 = \angle 11, by vertical angles theorem.

\angle 13 = 106\°

Therefore, the answers are

\angle 10=92\°\\\angle 8 = 92\°\\\angle 9=88\°\\\angle 5=106\°\\\angle 11 = 106\°\\\angle 13 = 106\°

stich3 [128]3 years ago
6 0

Answer:

m∠10 = 92°

m∠8 = 92°

m∠9 = 88°

m∠5 = 88°

m∠11 = 88°

m∠13 = 88°

Step-by-step explanation:

m∠10 = 92° (corresponding angles are equal)

m∠8 = 92° (Vertically opposite angles are equal)

m∠9 = m∠7 = 88° (Alternate interior angles are equal)

m∠5 = m∠7 = 88°  (corresponding angles are equal)

m∠11 = m∠5 = 88°  (Alternate interior angles are equal)

m∠13 = m∠11 = 88° (vertically opposite angles are equal)

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