`d = sqrt ( (X_1 -X_2)^2 + (Y_1 - Y_2 )^2)`

Enter a value for all fields

The Distance Between Two Points  calculator computes the linear distance between two points in a plane.

INSTRUCTIONS:  Enter the following:

• (X₁ , Y₁)  This is the X and Y values for point 1 (e.g.  3.3  5.6)
• (X₂ , Y₂)  This is the X and Y values for point 2. (e.g. 7.9  2.3)

Distance between Points (D): The calculator returns the distance between the points.  It assumes the units for the distance are the same units for the output.

The Math / Science

The formula for the distance between two points is:

       `D = sqrt( (X_1 - X_2)^2 + (Y_1 -Y_2)^2)`

where:

• D is the distance between the two points.
• X₁ is the x coordinate of point 1
• X₂ is the x coordinate of point 2
• Y₁ is the y coordinate of point 1
• Y₂ is the y coordinate of point 2

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A triangle is a polygon with three sides, three vertices (corners), and three angles. Triangles can be classified based on the lengths of their sides and the measures of their angles as follows:

By Side Lengths:

• Equilateral Triangle: All three sides are equal in length.
• Isosceles Triangle: Two sides are equal in length.
• Scalene Triangle: All three sides have different lengths.

By Angle Measures:

• Acute Triangle: All three angles are less than 90 degrees.
• Right Triangle: One angle is exactly 90 degrees.
• Obtuse Triangle: One angle is greater than 90 degrees.

The sum of the interior angles of any triangle always adds up to 180 degrees. 

Triangle Calculators

• Area of Triangle (base and height)
• Area of Triangle (two sides and interior angle)
• Area of Triangle (two angles and interior side)
• Area of Triangle (three sides)
• Area of Equilateral Triangle
• Area of Triangle (three points)
• Height of Triangle
• Width of Triangle
• Triangle Perimeter
• Interior Angle of a triangle based on the length of three sides
• Semi-perimeter of a triangle
• Area of Circle Within a Triangle
• Area of Circle Around a Triangle
• Area between two vectors
• Triangle Volume