Geometry - Coordinate Geometry:
check out this website:
http://regentsprep.org/Regents/mathb/1D/Coordinatelesson.htm
check out this website:
http://regentsprep.org/Regents/mathb/1D/Coordinatelesson.htm
B(x1, y1) and A (x2, y2) is from the
Pythagorean Theorem which is:
c2 = a2 + b2
since a = (x2 – x1) and b = (y2 – y1)
we get
c2 = (x2 – x1)2 + (y2 – y1)2
so taking the square root of both sides we have our distance formula.
Pythagorean Theorem which is:
c2 = a2 + b2
since a = (x2 – x1) and b = (y2 – y1)
we get
c2 = (x2 – x1)2 + (y2 – y1)2
so taking the square root of both sides we have our distance formula.
Here are the Slope Formula and the Midpoint Formula:
Using the following chart, if we have to prove congruent segments, we have to show they have equal length by using the distance formula.
Here is a web-site to hopefully help:
