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alekssr [168]
3 years ago
6

15. In the diagram AB is parallel to CD. Calculate the value of a. NOT TO SCALE

Mathematics
1 answer:
VikaD [51]3 years ago
5 0

Same-side interior angles, which are shown here, are supplementary, which means that they add up to 180 degrees.

5a + a = 180

6a = 180

a = 30 degrees

Hope this helps! :)

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