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babymother [125]
3 years ago
10

In the figure, if the measure of 21 = 112°, what's the measure of 212?

Mathematics
2 answers:
Vera_Pavlovna [14]3 years ago
5 0

Answer:

122

Step-by-step explanation:

Usimov [2.4K]3 years ago
3 0

48°

Alternate interior angles.

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motikmotik

9514 1404 393

Answer:

  • The are congruent.
  • They are non-adjacent.

Step-by-step explanation:

Where a transversal crosses parallel lines, the angles outside the parallel lines are called exterior angles. When they are on opposite sides of the transversal, they are <em>alternate exterior angles</em>.

Alternate exterior angles are congruent.

The share a side (the transversal, but not a vertex. So they are non-adjacent.

_____

<em>Additional comment</em>

In this geometry, <em>corresponding</em> angles are congruent. Of course, vertical angles are always congruent. Each alternate exterior angle is a vertical angle with one that is corresponding to the other alternate exterior angle.

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Step-by-step explanation:

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