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Find angle CBA

pls help

Find angle CBA pls help-example-1
User Ulfhetnar
by
8.1k points

2 Answers

2 votes

Answer:

<CBA = 40°

Explanation:

If AB is parallel to DE, you can make an irregular pentagon by continuing AB and drawing a line perpendicular to DE. The sum of the interior angles of a pentagon is 540. You can use this to solve for the supplement of <CBA, then subtract that from 180. (I’m sure there’s an easier way, but I cant think of one right now).

540-90-90-145-75=x

140=x

<CBA=180-140= 40°

User Bhargavg
by
7.8k points
4 votes

Answer:

40

Explanation:

u can draw a line at point c parallel to line ab

angle at d and lower part of c is interior angle so u can find the value at lower part of c that is 180-145=35

so point c 75-35=40 is upper part of point c

upper part of c and angle b is alternate angle so both angle are the same

angle cba is 40

User Spekulatius
by
8.0k points
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