This video tutorial prepares students for the IM1 test on transformations and congruence. It covers key concepts such as midpoint, segment addition, coordinate transformations, graphing, reflections, angle bisectors, and postulates. The tutorial also explains the use of midpoint and distance formulas, vectors for transformations, and logical statements with properties of equality. The teacher provides step-by-step explanations and examples to help students understand and apply these concepts effectively.

What is the main focus of the lesson in this video?

• Trigonometry

• Probability and statistics

• Algebraic equations

• Transformations and congruence

If a segment ST has a midpoint Y, and SY is 7.2x, what is the length of ST?

• 7.2x

• 3.6x

• 21.6x

• 14.4x

What happens to the x-coordinates during the transformation described?

• They are halved

• Their signs are changed

• They remain unchanged

• They are doubled

What is the result of reflecting a figure over the y-axis?

• The figure is rotated 90 degrees

• The figure is flipped vertically

• The figure is enlarged

• The figure is flipped horizontally

What is an angle bisector?

• A line that is parallel to another line

• A line that is perpendicular to a segment

• A line that divides a segment into two equal parts

• A line that divides an angle into two equal parts

If angle IJK is 153 degrees and angle AJK is 61 degrees, what is the measure of angle IJA?

• 92.5 degrees

• 153 degrees

• 61 degrees

• 92 degrees

What is the midpoint of a segment with endpoints (4, -4) and (-6, 4)?

• (-1, 1)

• (1, 0)

• (0, -1)

• (-1, 0)

What is the sum of angles in a linear pair?

• 360 degrees

• 180 degrees

• 90 degrees

• 270 degrees

What does a vector transformation involve?

• Changing the size of a figure

• Moving a figure in a specific direction

• Rotating a figure

• Reflecting a figure