Geometry Semester Review Topic 1

Front

What does it mean for points to be coplanar?

Back

Points are coplanar if they lie on the same plane.

Front

Name a point that is coplanar with points F, K, and J if E is one of the points.

Back

E is coplanar with points F, K, and J.

Front

If m∠LNK = 5x - 27 and m∠KNM = 10x - 3, how do you find m∠JNM?

Back

Set m∠LNK + m∠KNM = m∠JNM and solve for x.

Front

What is the formula to find the length of a line segment with endpoints A(x1, y1) and B(x2, y2)?

Back

Length = √((x2 - x1)² + (y2 - y1)²).

Front

Calculate the length of segment AB with endpoints A(-1, 7) and B(11, -1).

Back

Length of segment AB is 14.4.

Front

What is the definition of a midpoint in geometry?

Back

A midpoint is a point that divides a segment into two equal parts.

Front

If X is the midpoint of segment WY, what is the relationship between WX and XY?

Back

WX = XY because X is the midpoint.

Front

If WX = 3x - 1 and WY = 10x - 26, how do you find XY?

Back

First, find WY = 2 * WX, then solve for XY.

Front

What is the value of XY if WX = 3x - 1 and WY = 10x - 26 equals 34?

Back

XY = 17.

Front

What is the significance of the midpoint formula in geometry?

Back

It helps to find the exact center point of a line segment.