Step-by-step explanation:
The angle bisectors are lines that divide each angle of the triangle into two equal parts, the intersection of these lines is called the incenter.
The altitudes are lines that go from the vertex to the opposite side and form an angle of 90 degrees with the side. The intersection of these lines is called orthocenter.
The perpendicular bisectors are lines that cross each side at an angle of 90 degrees and divide the side into two equal parts. The intersection of these lines is called circumcenter.
Answer:
Then, we can answer each question of the last 3 triangles as follows