Consecutive angles of a parallelogram are supplementary, so:

This means
and that
.
Since opposite angles of a parallelogram are congruent,

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Answer:
Each ticket cost $13
Step-by-step explanation:
Day 1-- 1 adult and 8 child ticket= Total of 9 tickets = $117
Day 2--6 adult and 8 child ticket= Total of 14 = $182
Brainliest please :)
Answer:
15. 1/3 (33%)
16. 1/6 (16.66%)
17. 1/2 (50%)
18. 1/2 (50%)
19. 1/1 (100%)
20. 0/1 (0%)
Step-by-step explanation:
Answer:
18cm
Step-by-step explanation: