Triangle classification - MarisaOJ: Marisa Online Judge

Given three points

$A(x_A,y_A),B(x_B,y_B),C(x_C,y_C)$ . Determine if the type of the triangle formed by these points (right, acute, obtuse). It is guaranteed that

$A, B, C$ are not collinear. ### Input - A single line contains six integers

$x_A,y_A,x_B,y_B,x_C,y_C$ . ### Output - Print: +

$RIGHT$ if it is a right triangle. +

$ACUTE$ if it is an acute triangle. +

$OBTUSE$ if it is an obtuse triangle. ### Constraints -

$-10^9 \le x, y \le 10^9$ . ### Example Input:

$0 0 0 5 -1 7$

Output:

$OBTUSE$

Geometry
	Three points
	Line segment intersection
	Line intersection
	Quadrilateral classification
	Point location
	Triangle classification
	Polygon area
	Distance to polygon
	Convex hull
	Perpendicular pairs
	Maximum quadrilateral
	Catching butterflies

Topic

Geometry

Rating

1200

Solution (0)

Solution