Triangle defined by 3 lines

Lines form: ax + by + c = 0

Line 1:

x +

= 0

Line 2:

x +

= 0

Line 3:

x +

= 0

Intersection Coordinates (x , y):	Line 1-2
	Line 1-3
	Line 2-3

Angle Between Lines:	Line 1-2	Line 1-3	Line 2-3
Lines Length:	Line 1	Line 2	Line 3
Angle to x axis:	Line 1	Line 2	Line 3

Triangle Area:
Triangle Circumference:
Intersection point of the medians:
Intersection point of the altitudes:
Intersection point of the perpendicular bisectors:
Intersection point of the angle bisectors (incircle center):
Incircle equation:
Circumcircle equation:

Degree

Radian

Line geometry

Triangle defined by 3 points

Triangle overview

Point inside a triangle

Triangle defined by three lines

Triangle given by three lines equations of the form

Area (A)

Intersection points of the triangle sides:

Angles between the triangle sides:

Intersection point of the medians (x , y)
(centroid - also known as the center of gravity)
We use the sides intersection points that had been found before.

Triangle given by three lines of the form:

Intersection points of the triangle sides:

Lines 1,2
Lines 2,3
Lines 3,1