one more please help!
http://www.rmes.us/AngelUploads/Content/MAT201//_assoc/Content/G%20Images/u2m3q4.jpg
Use the Interior Angle Sum Conjecture to find the measure of angle a.
For full credit, show your work or your reasoning.

Question

anonymous · Answer

$$2a=540-(180-70)-(180-68)-116-110$$
$$2a=92$$
$$a=46$$

pentagon interior angles sum to 540 degrees and you can solve for the two unknown angles by subtracting their measures from 180 (seen above)

anonymous · Answer

well, to be more verbose, you can solve for the unlabeled unknown angles by subtracting their adjacent angle from 180 e.g. 180-70=110 and 180-68=112. also because angle "a" is indicated to be present twice, you can do as i did above and set the remainder from 540-110-112-116-110 equal to 2a, then divide your answer by 2 to yield the actual value of "a". good luck