What is the orthocenter of a triangle with corners at #(4 ,2 )#, #(8 ,3 )#, and (7 ,9 )#?
It is
The orthocenter is the intersection of the lines perpendicular to the sides passing from the opposite vertex.
The first step is to calculate the line passing from two of the corners.
The general equation of a line is
we can subtract the first equation from the second, side by side I plug this value on the first equation to find So the orthogonal passing from the third point is We repeat the same procedure taking the point 1 and 3 and finding the line. The orthogonal has an Now we need to intersect both the orthogonal and we will have the orthocenter. Technically the orthocenter is the intersection of the three perpendicular, but we do not need to calculate the third because a point is fully identified already with the intersection of two lines. having substituting the valute of The orthocenter has coordinates
The line passing from the first two points is:
Now we want the orthogonal to this line.
As any other line on the plane, the equation of the orthogonal is
We have to find only
subtract the first from the second
The equation of the line between point 1 and 3 is then
The orthogonal line is then
We intersect
By signing up, you agree to our Terms of Service and Privacy Policy
To find the orthocenter of a triangle, you need to find the intersection point of the altitudes of the triangle. An altitude is a line segment drawn from a vertex of the triangle perpendicular to the opposite side.
The coordinates of the orthocenter can be calculated as follows:
- Find the slopes of the lines passing through each pair of points representing the sides of the triangle.
- Determine the slopes of the perpendicular lines (altitudes) passing through each vertex.
- Use the point-slope form to find the equations of these altitudes.
- Solve the system of equations formed by the altitudes to find the coordinates of the orthocenter.
Given the coordinates of the triangle's vertices:
, , and
The slopes of the sides are:
The slopes of the perpendicular lines (altitudes) are the negative reciprocals of these slopes:
Now, using point-slope form with the vertex coordinates:
For :
Equation of altitude through :
For :
Equation of altitude through :
For :
Equation of altitude through :
Solve the system of equations to find the intersection point, which represents the orthocenter.
By signing up, you agree to our Terms of Service and Privacy Policy
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- What is the orthocenter of a triangle with corners at #(2 ,7 )#, #(1 ,2 )#, and (3 ,5 )#?
- A line segment is bisected by a line with the equation # - y + 4 x = 3 #. If one end of the line segment is at #( 2 , 6 )#, where is the other end?
- What is the orthocenter of a triangle with corners at #(5 ,7 )#, #(2 ,3 )#, and #(7 ,2 )# ?
- A line segment is bisected by a line with the equation # 2 y + 9 x = 3 #. If one end of the line segment is at #(3 ,2 )#, where is the other end?
- In a triangle ABC (figure) the points P and Q are selected in the sides AC and BC respectively in a way that PC is half of BC and QC is half of AC:#bar(PC)/bar(BC) = 1/2; bar(QC)/bar(AC)= 1/2#. Find #bar(PQ)# if the side #bar(Ab)# is 20?
- 98% accuracy study help
- Covers math, physics, chemistry, biology, and more
- Step-by-step, in-depth guides
- Readily available 24/7