<u>Supplementary:</u> 1 and 2 & 3 and 4
Supplementary angles: A pair of angles whose sum is equal to 180°.
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<u>Vertical:</u> 1 and 3 & 2 and 4
Vertical angles: A pair of opposite angles that are made by two intersecting lines.
<u>Complimentary:</u>
Complimentary angles: A pair of angles whose sum is equal to 90°.
Hope this helps! :D
Answer:
20 or 18
Step-by-step explanation:
<span>2X +1=-15
Subtract 1 from both sides
2x=-16
Divide 2 on both sides
Final Answer: x=-8</span>
