AA, SSS, SAS, or not similar??

C

Step-by-step explanation:

This is showing Side Angle Side congruency because first of all where the triangles connect shows vertical angles meaning that they are congruent

Second of all the triangle are similar because or proportions

they are both showing proportions of 1.5 therefore the sides are similar

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18. g

20. h 30 degree turn.

21. d 90 degree angles

and also 19 is a. a sphere not a cirlcle

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circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: