Checkpoint 1 Review

On the line AD, points B and C are between A and D. AB = 3x+4, BC = 6, and AD = 32. If  $AB\cong CD$  then find the length of AB.

• 13

• 6

• 18

• 10

The computer screen is an example of a...

• Perpendicular

• Line

• Plane

• Parallel

Choose the correct biconditional for the following statement:

If a triangle is equilateral, then all of its sides are equal.

• A triangle is equilateral if and only if all of its sides are equal.

• All of a triangle's sides are equal if and only if it is equilateral.

• If all of its sides are equal, then the triangle is equilateral.

• If a triangle is not equilateral, then all of its sides are not equal.

Line PQ has a midpoint of S. Point P is (4, -5) and point S is (-2, -1). Find the length of PQ.

• 14.4

• 7.2

• 12.8

• 8.8

Intersection of two planes is a...

• Point

• Line

• Plane

• Perpendicular

XZ is the diameter of the circle. Given X(3, -4) and Z(9, 12), find the coordinates of the center of the circle.

• (12, 8)

• (6, 4)

• (-6, -8)

• (6, 8)

Which of the following conditional statements has a converse statement that is true?

• If it is raining, then it is wet.

• If I am in the NMHS Band, then I go to NMHS.

• If two angles are supplementary, then they add up to 180.

• If an angle is an obtuse angle, then it is not a right angle.

M is the midpoint of line LN. If LM=7x-4 and MN=5x+8, then what is the length of LN.

• 6

• 38

• 76

• 60

Line PQ has a midpoint of S. Point P is (4, -5) and point S is (-2, -1). Find the coordinates of point Q.

• (-8, 3)

• (10, -9)

• (10, -8)

• (1, -3)

Using the distance formula, which of the following is set up correctly to find the distance between (a, -c) and (-3, p)?

• $\sqrt{\left(a+c\right)^2+\left(-3-p\right)^2}$

• $\sqrt{\left(-3-a\right)^2+\left(p+c\right)^2}$

• $\left(a+c\right)^2+\left(-3-p\right)^2$

• $\sqrt{\left(-3+a\right)^2+\left(p-c\right)^2}$