What are the angles of this shapes?
PHOTO ABOVE

For shape 1, the angle would be 360/8 = 45 degrees

For shape 2, as it doesn't have rotational symmetry, it would just be 360 degrees.

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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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