Question

Orthocentre of triangle formed by orthocentre and other 2 vertices

Answer 1

aaare Bhai aapka question Kya puch Raha h

Answer 2

Orthocentre of triangle formed by orthocentre and other 2 vertices is the Third vertex.

The Altitudes drawn to the sides of a triangle are concurrent. The point of concurrency is Orthocentre.

So, A principle is that,

If A, B, C are the sides of a triangle and O is Orthocentre, then the Orthocentre of any three points is the fourth point.

Orthocentre of ΔABC = O

Orthocentre of ΔBOC = A

Orthocentre of ΔAOC = B

Orthocentre of ΔAOB = C

Few more points that can help are,

In an acute angled triangle, Orthocentre lies inside the triangle.

In an obtuse angled triangle, Orthocentre lies outside the triangle.

In a right angled triangle, Orthocentre lies at the vertex at the Right angle.