The answer is C because they do not repeat.
12 and 20 are both divisible by 4
12 ÷ 4 = 3
20 ÷ 4 = 5
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The simplest ratio would be 3:5
It’s a right angle. it follows the circle theorem ‘the angle in a semi-circle is 90 degrees’
Answer:SAS
Step-by-step explanation: