Which of the following diagrams includes an orthocenter? in order: a, b, c, d

ANSWER

The correct answer is option  A

EXPLANATION

The orthocenter is the point of intersection of all the altitudes of the triangle.

The altitudes are the vertical height of the triangle.

The altitudes emanate from one vertex of the triangle and meet the opposite side at right angles.

From the given diagrams, option A is the correct answer, because it has all the altitudes intersecting at a common point called the orthocenter.

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.