Determine the perimeter of the right triangle shown. Round your final answer to the nearest whole number, if necessary.

right triangle with vertices at negative 5 comma negative 2, negative 5 comma 6, and 2 comma negative 2

7 units
14 units
25 units
26 units



Answer :

The perimeter of the right triangle which is as described by the vertices given in the task content is; 26 units.

What is the perimeter of the right triangle which is as described by the vertices?

Since the vertices of the right triangle are given as; ( -5, -2 ), ( -5, 6 ) and ( 2, -2 ).

Therefore, we have that;

Between, the vertices; ( -5, 2 ) and ( -5, -6 ), the distance is; D = | 6 - (-2) | = 8.

Also, the distance between ( -5, -2 ) and ( 2, -2 ) is; D = | -5 - 2 | = 7.

Therefore, since the length of the perpendicular sides are; 7 and 8; the length of the hypothenuse of the right triangle is;

hypothenuse = √ (8² + 7²)

hypothenuse = √ (64 + 49)

hypothenuse = √113

hypothenuse = 10.63.

Therefore, the perimeter of the right triangle is; ( 8 + 7 + 10.63) = 25.63 = 26 units when rounded to the nearest whole number.

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Answer:

  (d)  26 units

Step-by-step explanation:

You want the perimeter of the right triangle with vertices (-5, -2), (-5, 6), and (2, -2).

Perimeter

The perimeter of a geometric figure is the sum of the lengths of its sides. Two of the sides of this triangle align with the coordinate grid, so their lengths are easily determined by counting grid squares or finding the difference of the relevant coordinates.

The two axis-aligned side lengths are 7 and 8 units.

Distance formula

The third side length can be found using the distance formula:

  d = √((x2 -x1)² +(y2 -y1)²)

  d = √((2 -(-5))² +(-2 -6)²) = √(7² +(-8)²) = √113 ≈ 10.63 ≈ 11

Sum of lengths

The sum of the side lengths is ...

  7 +8 +11 = 26 . . . . units

The perimeter of the right triangle is about 26 units.

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Additional comment

Various tools can help you find the side lengths. A geometry application can display them for you, as in the first attachment. A spreadsheet can apply the distance formula to adjacent pairs of points, as in the second attachment.

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