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1.1 Points, Lines and Planes. CFU 3108.3.2. Remember you have 5 minutes to get started. Chapter 1 Define and place in your glossary. Line Line segment Point Plane Congruent Segment bisector Collinear Coplanar Precision Accuracy Ray. Angle bisector Perpendicular

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1.1 Points, Lines and Planes

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1.1 Points, Lines and Planes

CFU 3108.3.2


Remember you have 5 minutes to get started.

Chapter 1Define and place in your glossary.

  • Line

  • Line segment

  • Point

  • Plane

  • Congruent

  • Segment bisector

  • Collinear

  • Coplanar

  • Precision

  • Accuracy

  • Ray

  • Angle bisector

  • Perpendicular

  • Complementary Angles

  • Supplementary angles

  • Intersection

  • Polygon

  • Concave

  • Convex

  • Regular Polygon

  • Polyhedron

  • Vertex


Objective and Standard

  • Introduce proper conventions for naming points, lines and planes and identifying intersections of lines and planes.

  • Recognize that a definition depends on undefined terms and on previous definitions.

  • Describe the intersection of lines (in the plane and in space), a line and a plane, or of two planes.

  • Develop the structures of geometry, such as lines, angles, planes, and planar figures, and explore their properties and relationships.

  • Give precise mathematical descriptions or definitions of geometric shapes in the plane and space.


Key Points

n

B

Y

T

A

X

Z


Name Line & Plan

l

E

A

B

C

D

N

List two points to name line l

AB, BA, AC, CA, AD, DA, BC, CB, BD, DB, CD, DC

List three point names for plane N

ABE, ACE, ADE, BCE, BDE, CDE


Draw Geometric Figures

  • Lines GH and JK intersect at L for

    • G(-1, -3), H(2,3), J(-3, 2) & K(2, -3)

  • Point M is coplanar with these points but not collinear with GH or JK.

H

J

M

L

K

G

  • Graph GH and JK and M

  • Label the Intersection L


Interpret Drawing

  • How many planes in the figure?

    • 4

  • Name three points that are collinear

    • D, B, G

  • Are points G,A,B and E collinear?

  • At what point do EF and AB intersect?

F

D

P

G

C

E

B

A


Summarize

Objective: Introduce proper conventions for naming points, lines and planes and identifying intersections of lines and planes


Assignment – Block Class

  • Page 8, 14 - 46 even and 62, 64

  • Page 9, 32 - 78 Even

Assignment – Honors Class


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