Orthocenter – **the point where the three altitudes of a triangle meet** (given that the triangle is acute) Circumcenter – the point where three perpendicular bisectors of a triangle meet.

Contents

- 1 What is the Orthocentre of a triangle?
- 2 What is an example of an orthocenter?
- 3 What is Orthocentre and how do you find it?
- 4 What is Orthocentre of a right angled triangle?
- 5 Are orthocenter and centroid the same?
- 6 What is difference between Orthocentre and Circumcentre?
- 7 Why is Orthocentre denoted by H?
- 8 What are the properties of an orthocenter?
- 9 Do all triangles have an orthocenter?
- 10 Why is Orthocentre important?
- 11 How many centers does a triangle have?
- 12 What is excenter of a triangle?
- 13 What is the relationship between the Orthocentre Circumcentre and centroid?

## What is the Orthocentre of a triangle?

An orthocenter can be defined as the point of intersection of altitudes that are drawn perpendicular from the vertex to the opposite sides of a triangle. The orthocenter of a triangle is that point where all the three altitudes of a triangle intersect. Hence, a triangle can have three altitudes, one from each vertex.

## What is an example of an orthocenter?

Take an example of a triangle ABC. In the above figure, you can see, the perpendiculars AD, BE and CF drawn from vertex A, B and C to the opposite sides BC, AC and AB, respectively, intersect each other at a single point O. This point is the orthocenter of △ABC.

## What is Orthocentre and how do you find it?

Find the equations of two line segments forming sides of the triangle. Find the slopes of the altitudes for those two sides. Use the slopes and the opposite vertices to find the equations of the two altitudes. Solve the corresponding x and y values, giving you the coordinates of the orthocenter.

## What is Orthocentre of a right angled triangle?

The orthocenter is a point where three altitude meets. In a right angle triangle, the orthocenter is the vertex which is situated at the right-angled vertex. The circumcenter is the point where the perpendicular bisector of the triangle meets.

## Are orthocenter and centroid the same?

The centroid of a triangle is the point at which the three medians meet. The orthocenter is the point of intersection of the altitudes of the triangle, that is, the perpendicular lines between each vertex and the opposite side.

## What is difference between Orthocentre and Circumcentre?

the difference between the orthocenter and a circumcenter of a triangle is that though they are both points of intersection, the orthocenter is the point of intersection of the altitudes of the triangle, and the circumcenter is the point of intersection of the perpendicular bisectors of the triangle.

## Why is Orthocentre denoted by H?

The three (possibly extended) altitudes intersect in a single point, called the orthocenter of the triangle, usually denoted by H. The orthocenter lies inside the triangle if and only if the triangle is acute (i.e. does not have an angle greater than or equal to a right angle).

## What are the properties of an orthocenter?

Properties. The orthocenter and the circumcenter of a triangle are isogonal conjugates. If the orthocenter’s triangle is acute, then the orthocenter is in the triangle; if the triangle is right, then it is on the vertex opposite the hypotenuse; and if it is obtuse, then the orthocenter is outside the triangle.

## Do all triangles have an orthocenter?

It appears that all acute triangles have the orthocenter inside the triangle. Depending on the angle of the vertices, the orthocenter can “move” to different parts of the triangle.

## Why is Orthocentre important?

The orthocenter of a triangle is the intersection of the triangle’s three altitudes. It has several important properties and relations with other parts of the triangle, including its circumcenter, incenter, area, and more. The orthocenter is typically represented by the letter H.

## How many centers does a triangle have?

Triangle Centers. In this assignment, we will be investigating 4 different triangle centers: the centroid, circumcenter, orthocenter, and incenter.

## What is excenter of a triangle?

Excenter of a triangle A point where the bisector of one interior angle and bisectors of two external angle bisectors of the opposite side of the triangle, intersect is called the excenter of the triangle.

## What is the relationship between the Orthocentre Circumcentre and centroid?

Theorem 1 The orthocentre, centroid and circumcentre of any trian- gle are collinear. The centroid divides the distance from the orthocentre to the circumcentre in the ratio 2:1. The line on which these 3 points lie is called the Euler line of the triangle.