### Home > INT2 > Chapter 3 > Lesson 3.1.5 > Problem3-57

3-57.

On graph paper, draw $ΔABC$ with vertices $A(3,2)$, $B(-1,4)$, and $C(0,-2)$. 3-57 HW eTool (Desmos). Homework Help ✎.

1. Calculate the perimeter of $ΔABC$.

$\sqrt{20} + 5 + \sqrt{37} \approx 15.55 \text{ units}$

2. Dilate $ΔABC$ from the origin by a factor of 2 to create $ΔA′B′C′$. What is the perimeter of $ΔA′B′C′$?

3. If $ΔABC$ is rotated 90° clockwise (↻) about the origin to form $ΔA^{\prime\prime}B^{\prime\prime}C^{\prime\prime}$, name the coordinates of $C^{\prime\prime}$.

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