Rotating a triangle 90 degrees counter clockwise

The video tutorial explains how to rotate a triangle 90 degrees counterclockwise about the origin. It begins with plotting the original points of the triangle, labeled J, K, and L. The instructor clarifies the assumed direction of rotation and the point of rotation. The process involves swapping the coordinates and negating the first coordinate to achieve the rotation. Finally, the new positions of the rotated points are plotted, completing the rotation process.

What is the first step in rotating a triangle 90 degrees?

• Swap the coordinates

• Label the points of the triangle

• Plot the new points

• Negate the first coordinate

When rotating a triangle 90 degrees, what is the assumed direction and point of rotation?

• Counterclockwise about the origin

• Counterclockwise about the center

• Clockwise about the center

• Clockwise about the origin

What is the transformation applied to the coordinates when rotating 90 degrees counterclockwise?

• Swap the coordinates and negate the second

• Swap the coordinates and negate the first

• Negate both coordinates

• Swap the coordinates without negation

After rotating point J (2, 6) 90 degrees counterclockwise, what are the new coordinates?

• (2, -6)

• (-2, 6)

• (6, -2)

• (-6, 2)

What is the final step after calculating the new coordinates for a 90-degree rotation?

• Swap the coordinates again

• Negate the second coordinate

• Plot the new points

• Label the new points