Geometry Review: 1.1-1.3

• line p

• line q

• line r

Answer explanation

A line can be named by the lowercase script under the arrowhead.

• line p

• line q

• line r

Answer explanation

A line can be named by the lowercase script under the arrowhead.

What is another name for line p in this figure?

Answer explanation

A line can be named by 2 of its points with a double arrowhead written over it.

What is another name for line r in this figure?

Answer explanation

A line can be named by 2 of its points with a double arrowhead written over it.

Which of these sets of points is collinear?

• H, N, O

•  I, K, L

• J, K, N

• M, N, O

Answer explanation

Collinear points are a set of points that lie together on the same line.

Which of these sets of points is collinear?

• H, K, L

•  H, M, N

• J, K, L

• I, N, O

Answer explanation

Collinear points are a set of points that lie together on the same line.

Which of these sets of points are coplanar?

• H, J, K

• H, L, N

• J, K, N

• K, L, M

Answer explanation

Coplanar points are a set of points that lie together on the same plane.

What is another name for plane R?

(This name will contain three coplanar points.)

• Plane HJN

• Plane HKL

• Plane JLM

• Plane KMN

Answer explanation

A plane can be named by any set of 3 points that lie on it or by a uppercase script letter in the corner.

Name the intersection of line a and line b.

• H

• J

• K

• L

Answer explanation

Two lines intersect at the one common point that lies on both lines.

Name the intersection of line c and Plane R.

Answer explanation

A plane and a noncoplanar line intersect at the one point that lies on the plane.