GRADE 7: INTRODUCTION TO GEOMETRY

GRADE 7: INTRODUCTION TO GEOMETRY

Undefined Terms

OBJECTIVES:

• describe a point, line, plane, ray, line segment, and other geometric terms 

• illustrate a point, line, plane, ray, line segment, and other geometric terms

• display open-mindedness in representing a point, line, and plane using real-life objects

PRE-TEST

Multiple Choice

It is a set of points arranged in a row. What is it called?

• Point

• Line

• Plane

• Angle

Multiple Choice

It suggests an exact location in space.

• Point

• Line

• Plane

• Angle

Multiple Choice

It is a set of points in an endless flat surface.

• Point

• Line

• Plane

• Angle

Multiple Choice

Refers to points on the same line

• Collinear points

• Coplanar points

• Coplanar lines

Multiple Choice

Are points on the same plane

• Collinear points

• Coplanar points

• Coplanar lines

Multiple Choice

Are lines on the same plane

• Collinear points

• Coplanar points

• Coplanar lines

Multiple Choice

Are lines that do not lie on the same plane. They are neither intersecting nor parallel.

• Skew Lines

• Concurrent Lines

• Line Segment

Multiple Choice

A subset of a line that has only one endpoint and is extended endlessly in one direction

• Line Segment

• Ray

• Line

Open Ended

Can you give me an example of an object that represents a point?

Open Ended

What about a line? Can you name an object/s that represent/s a line?

Open Ended

How about a plane, what are concrete example of a plane?

Use the figure at the right to identify what is being asked.

• Name the point(s) in the interior region of the circle. 

• Name the point(s) in the interior region of the triangle

• Name the line(s) in the interior region of the triangle. 

Use the figure at the right to identify what is being asked.

• Give other name(s) for line p

• Name the plane that can be formed by the three points in the interior of the circle. 

• Name the plane formed by line p and point I.

• Name the points outside the circular region.

Multiple Choice

The point, line and plane are what we called _____?

• Objects

• Lines

• Undefined Terms

UNDEFINED TERMS

are those terms that don't require a formal definition

Subsets of a Line

• Line Segment 

• Ray

Other Basic Geometric Terms on Points and Lines