Find the perimeter of the triangle.
Find the perimeter of the triangle.
The perimeter of a triangle is the sum of its side lengths so we first need to find the three side lengths of the triangle.
Since the side from (−3,−1) to (2,−1) is a horizontal segment, we can count the number of units between the two points to find its length. Since 2−(−3)=5, then the length of this side is 5.
Since the side from (2,−1) to (2,3) is a vertical segment, we can count the number of units between the two points to find its length. Since 3−(−1)=4, then the length of this side is 4.
The side between from (-3,-1) to (2,3) is not a horizontal or vertical segment so we need to use the distance formula to find the lenght of this side:
Substitute.
Substract.
Evaluate the powers.
Add.
The length of the third side is then
The perimeter of the triangle is then about 5+4+6.4=15.4. The exact perimeter is
Find the point on the line