Math Geometry Review

What is the length of AC?

• √2 units
• √5 units
• 3 units
• 5 units

What is a statement that you can prove is true using a series of logical steps called?

• postulate
• counterexample
• theorem

What is the midpoint of AB?

• (-2, 5/2)
• (-3/2, 7/2)
• (-5/2, 3)
• (3, -5/2)

∆ABC is reflected across the y-axis to ∆A'B'C'. What is the rule for a reflection across the y-axis?

• (x, -y)
• (-x, -y)
• (-x, y)
• (y, x)

What type of transformation is NOT a rigid motion?

• translation
• reflection
• dilation

Which transformation can be used to map ∆MNP to ∆M'N'P' to show they are congruent?

• A reflection across x-axis then a horizontal translation.
• Reflection across y-axis then vertical translation.
• 180° Rotation

What transformation is described by the notation (x, -y)?

• translation left 1 unit
• translation down 1 unit
• Reflection across the      x-axis
• reflection across the        y-axis

What is the component form of the vector that maps XF to X'F'›

• <6, 5>
• <-6, -5>
• <-5, -6>

What is a portion of a line that starts at a point (the endpoint) and continues forever in one direction called?

• point
• line segment
• ray

What is the midpoint of XY? X(-2, 7) and Y(3, 1)

• (1/2, 3)
• (1/2, 4)
• (1, 8)
• (-3, 1)