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Rom4ik [11]
3 years ago
8

In the equilateral triangle XYZ, X is located at (-5, -9) and Z is located at (1, -17). What is the perimeter of Triangle XYZ? a

30 units b 10 units c 25 units d 5 units
Mathematics
1 answer:
mario62 [17]3 years ago
3 0

Answer:

Option a. 30 units

Step-by-step explanation:

we know that

An equilateral triangle has three equal sides

so

XY=YZ=XZ

The perimeter of triangle XYZ is equal to

P=XY+YZ+XZ

P=3XZ

<u><em>Find the distance XZ</em></u>

the formula to calculate the distance between two points is equal to

d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}

we have

X is located at (-5, -9) and Z is located at (1, -17)

substitute the values in the formula

XZ=\sqrt{(-17+9)^{2}+(1+5)^{2}}

XZ=\sqrt{(-8)^{2}+(6)^{2}}

XZ=\sqrt{100}

XZ=10\ units

Find the perimeter

P=3(10)=30\ units

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