Basic Vocabulary
Formulas
Angle Relationshipss
Finding Midpoints
Finding Distance Between 1 Points
100

A measurable part of a line consisting of two endpoints.

What is a line segment?

100

The formula used to find the midpoint between two endpoints.

What is the midpoint formula- (x1 + x2)/2, (y1 + y2)/2

100

Adjacent angles that are supplementary and that form a straight line.

What is a linear pair?

100

The midpoint of segment HK given H(-1, 2) and K (-7, -4)

What is (-4, -1)

100

This is AB if A(2, 0) and B(6, 3)

What is 5?

200

A location with no size or shape

What is a point?

200

The formula used to find the distance between 2 points on a coordinate plane.

What is the distance formula?  (square root (x2 - x1)^2 + (y2 -y1)^2

200

Two angles with measures that add to 90 degrees

What is complementary?

200

S is the midpoint of RT.

This is T if R (-9, 4) and S(2, -1)

What is (13, -6)

200

This is BC if B(8, -7) and C(-4, -2)

What is 13?

300

Points that lie on the same line.

What is collinear?

300

If  A, B and C are collinear points, and B is between A and C then AB + BC  =  AC

What is the segment addition postulate?

300

Two angles that are directly across from each other in intersecting lines. Their measures are congruent.

What are vertical angles?

300

This is the midpoint of the segment with these endpoints:  (5, 8) and (-1, -4)

What is (2,2)?

300

This is ST if S(-3, 10) and T(-2, 3). Round to nearest tenth.

What is 7.1?

400

Points that do NOT lie on the same plane.

What is non-coplanar?

400

The "rise" of a directed line segment

What is difference between ys  y2 - y1?

400

If angle ABD and angle DBC are adjacent, then angle ABD + angle DBC = angle ABC

What is the angle addition postulate.

400

The midpoint of segment HK given H(-1, 2) and K (-7, -4)

What is (-4, -1)

400

If P(-5, -1) and Q(-2, -4), this is the distance between P & Q (round to nearest tenth)

What is 7.6?

500

Made up of points with no thickness or width

What is a line?

500

The "run" of a directed line segment

What is horizontal change?  x2 - x1

500

Two lines that intersect at right angles.

What are perpendicular lines?

500

The coordinates of Z if Y is the midpoint of segment XZ, X(-10, 9) and Y(-4, 8)

What is (2, 7)?

500

The distance between (-4,6) and (3,-7) rounded to the nearest tenth

What is 14.8?

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