If line a is parallel to line b If the measure of angle 2 is 78 degrees, what is the measure of angle 5?

step-by-step explanation:

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the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

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6 equilateral triangles

the answer is -6

step-by-step explanation:

the answer is -6 because its next to the variable m