Maths - Triangles in a Co-ordinate System
e6664cff6dbb4a7cb63b2221fefd952cWhen working with triangles in a co-ordinate system, the most important step is?
Drawing a sketch.
144ffaac69174b9cbc168c4846ab49eeHow can you prove that a triangle is right-angled in a co-ordinate system?
Find the gradients of the lines and prove two are perpindicular.
4673dd39901c4e138fb5c03ac329cda1How can you prove two lines are perpindicular?
Show their gradients multiply to give $-1$.
ceefe6285ac3492eb638e9432cd03369How can you prove that a triangle is isoceles in a co-ordinate system?
Show _ two _ lines have the same length.
2e6469c7f2e645918dc9f7aa29e2ef77What step is often forgotten in proving a triangle is isceles in a co-ordinate system?
Not showing that there is at least one length different from the other two, otherwise it would be equilateral.
0c3c22d6eec74c8cae30215c4fde926dWhat does the notation $ \vert AB \vert $ represent in terms of co-ordinate systems?
The length of line $AB$.