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gizmo_the_mogwai [7]
3 years ago
14

Help please and thank you!!!!!

Mathematics
1 answer:
Zigmanuir [339]3 years ago
8 0

9514 1404 393

Answer:

  1. a) 2 and 4; b) 1&2, 2&3, 3&4
  2. x = 16

Step-by-step explanation:

1a. Vertical angles share a vertex and are composed of opposite rays. Here, angles 2 and 4 are vertical angles.

1b. Consecutively numbered angles are adjacent, as are angles 1 and 5. The pairs of interest can be chosen from ...

  1&2, 2&3, 3&4, 4&5, 5&1

__

2. Angles 1 and 3 have the same measure, because they are vertical angles. Then we have ...

  78° = (5x -2)°

  80 = 5x . . . . . . . divide by °, add 2

  16 = x . . . . . . . divide by 5

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