Curated OER
Altitudes & Orthocenters: Making Connections...
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Curated OER
Altitudes & Orthocenters: Making Connections...
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Curated OER
Altitudes & Orthocenters: Making Connections...
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Curated OER
Altitudes & Orthocenters: Making Connections...
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Curated OER
Altitudes & Orthocenters: Making Connections...
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Curated OER
Altitudes & Orthocenters: Making Connections...
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Curated OER
Altitudes & Orthocenters: Making Connections...
This site describes altitudes and orthocenters in triangles and their connections with the nine-point circle.
Texas Instruments
Texas Instruments: Simple Constructions
In this skill activity, students can use the Constructions Tools Menu in Cabri Jr. to contruct a parallelogram. They will also construct an altitude, an angle bisector and a median of a triangle.
Wolfram Research
Wolfram Math World: Orthocenter
This site from MathWorld provides a diagram of a triangle with its orthocenter labeled. The site details how to find the orthocenter with links to the key terms. The site details many other interesting properties of the triangle...
Varsity Tutors
Varsity Tutors: Hotmath: Graphing Calculator Practice: Polygons and Area of Plane Figures
Practice using your graphing calculator for measuring and constructing polygons and other plane figures. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under...
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Area, Surface Area, and Volume Problems
A guide to support parents as they work with their students with area, surface area, and volume problems.
National Council of Teachers of Mathematics
The Math Forum: Drexel Math Forum: Distance to an Object
Dr. Math offers a way to calculate the altitude of a triangle using only the lengths of the sides of the triangle. He briefly explains how this was used by the Egyptians long ago.