ACT Prep: Estimating Line Segment Lengths

Front

What is the definition of a line segment?

Back

A line segment is a part of a line that is bounded by two distinct endpoints.

Front

If points A, B, and C are collinear, how do you find the length of segment AC?

Back

To find the length of segment AC, add the lengths of segments AB and BC.

Front

What is the formula for finding the length of a line segment given two endpoints (x1, y1) and (x2, y2)?

Back

Front

If line segment AB is 5 cm and line segment BC is 7 cm, what is the length of line segment AC if A, B, and C are collinear?

Back

The length of segment AC is 12 cm.

Front

What is the relationship between collinear points and line segments?

Back

Collinear points lie on the same straight line, and the length of the line segment between any two points can be found by adding the lengths of the segments formed by any intermediate points.

Front

If line segment XY is 10 cm and line segment YZ is 15 cm, what is the length of segment XZ if X, Y, and Z are collinear?

Back

The length of segment XZ is 25 cm.

Front

What is the definition of collinear points?

Back

Collinear points are points that lie on the same straight line.

Front

If line segment PQ is 8 cm and line segment QR is 6 cm, what is the length of segment PR if P, Q, and R are collinear?

Back

The length of segment PR is 14 cm.

Front

How do you estimate the length of a line segment using a ruler?

Back

To estimate the length of a line segment, align the ruler with the segment and read the measurement at the endpoints.

Front

If line segment AB is 12 cm and line segment BC is 9 cm, what is the length of segment AC if A, B, and C are collinear?

Back

The length of segment AC is 21 cm.