We know that <em>a diameter of a circle is any straight line segment that passes through the center of the circle such that whose endpoints lie on the circle. </em>It is also be known as the longest chord of the circle.
In the given figure we can see that only<em></em><em>AC and BE are the line segments that pass through the center of the circle such that whose endpoints lie on the circle.</em>
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Hence, The line segment is a diameter of circle F = AC and BE
Addition of a positive and negative number always means that you are going to subtract the number e. g. 4+-1 = 3. However, multiplication of a positive and negative number means the answer is always negative e. g. 5 x - 3 = - 15.