Enlargement and Rotation Concepts

The video tutorial covers the enlargement of triangle T by a scale factor of three, using the origin as the center of enlargement. Each point of the triangle is enlarged step-by-step, and the final dimensions are verified. The second part of the tutorial demonstrates the rotation of shape S by 180 degrees about the point (1,1), using tracing paper to visualize the transformation.

What is the center of enlargement for the triangle in the problem?

• (1, 1)

• (0, 0)

• (2, 2)

• (3, 3)

By what scale factor is the triangle enlarged?

• 2

• 3

• 4

• 5

If a point is originally at (0, 1), where will it be after enlargement?

• (1, 3)

• (0, 3)

• (3, 1)

• (0, 2)

What is the new position of a point originally at (3, 1) after enlargement?

• (9, 3)

• (6, 2)

• (3, 3)

• (9, 1)

How do you verify the base of the enlarged triangle?

• Check if it's twice the original

• Check if it's half the original

• Check if it's three times the original

• Check if it's the same as the original

What should be the height of the enlarged triangle if the original height is 1?

• 3

• 2

• 4

• 1

What is the point about which the shape is rotated?

• (1, 1)

• (3, 3)

• (0, 0)

• (2, 2)

How many degrees is the shape rotated?

• 90

• 180

• 360

• 270

What tool is suggested for performing the rotation?

• Protractor

• Compass

• Ruler

• Tracing paper

What is the first step in rotating the shape?

• Mark the center of rotation

• Draw the shape

• Measure the angle

• Calculate the area