Graphic
Curated OER

Altitudes & Orthocenters: Making Connections...

For Students 9th - 10th
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Graphic
Curated OER

Altitudes & Orthocenters: Making Connections...

For Students 9th - 10th
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Graphic
Curated OER

Altitudes & Orthocenters: Making Connections...

For Students 9th - 10th
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Graphic
Curated OER

Altitudes & Orthocenters: Making Connections...

For Students 9th - 10th
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Graphic
Curated OER

Altitudes & Orthocenters: Making Connections...

For Students 9th - 10th
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Graphic
Curated OER

Altitudes & Orthocenters: Making Connections...

For Students 9th - 10th
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Graphic
Curated OER

Altitudes & Orthocenters: Making Connections...

For Students 9th - 10th
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Graphic
Curated OER

Altitudes & Orthocenters: Making Connections...

For Students 9th - 10th
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Graphic
Curated OER

Altitudes & Orthocenters: Making Connections...

For Students 9th - 10th
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Graphic
Curated OER

Altitudes & Orthocenters: Making Connections...

For Students 9th - 10th
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Graphic
Curated OER

Altitudes & Orthocenters: Making Connections...

For Students 9th - 10th
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Graphic
Curated OER

Altitudes & Orthocenters: Making Connections...

For Students 9th - 10th
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Graphic
Curated OER

Altitudes & Orthocenters: Making Connections...

For Students 9th - 10th
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Unit Plan
Math Words

Math words.com: Altitude of a Triangle

For Students 9th - 10th
This site provides a definition of what the altitude of a triangle is. It also provides a diagram.
Unit Plan
Cuemath

Cuemath: Point of Concurrency

For Students 9th - 10th
Learn all about the point of concurrency. This lesson targets the point of concurrency of perpendicular bisectors, the point of concurrency of the angle bisectors of a triangle, and has interesting solved examples and practice questions.