Question

Which of the following diagrams shows a circle circumscribed about a triangle?(1 point)
Responses

A dotted circle and a triangle are plotted within a 6 by 6 grid. The midpoint of the grid is marked as upper A.
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A dotted circle and a triangle are plotted within a 6 by 6 grid. The midpoint of the grid is marked as upper A.

Triangle upper A upper C upper B is plotted within a circle on a 12 by 9 unit grid. A point inside the triangle is labeled circumcenter.
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Triangle upper A upper C upper B is plotted within a circle on a 12 by 9 unit grid. A point inside the triangle is labeled circumcenter.

A dotted circle, a triangle, and three lines are plotted within a grid of 6 rows by 5 columns. A right triangle with vertices upper A, upper B, and upper C is plotted. A point upper D is plotted within the triangle, which is the center of the circle.
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A dotted circle, a triangle, and three lines are plotted within a grid of 6 rows by 5 columns. A right triangle with vertices upper A, upper B, and upper C is plotted. A point upper D is plotted within the triangle, which is the center of the circle.

A dotted circle, a triangle, and three lines are plotted within a grid of 5 rows by 5 columns. A right triangle with vertices upper A, upper B, and upper C is plotted. A point upper G is plotted within the triangle, which is the center of a circle.
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Answer 1

The second diagram (the one showing triangle A C B inside a circle with a point labeled "circumcenter").

Reason: a circumscribed circle passes through all three vertices; the circumcenter inside the triangle indicates the circle is the triangle's circumcircle.