
Lesson 1-1 Points, Lines, and Planes
Ohio Content Standards: • Formally define geometric figures.
Ohio Content Standards: • Formally define geometric figures. • Recognize and explain the necessity for certain terms to remain undefined, such as point, line and plane
Vocabulary: • Point:
Vocabulary: • Point: simply a location
Vocabulary: • Line:
Vocabulary: • Line: made up of points and has no thickness or width
Vocabulary: • Collinear:
Vocabulary: • Collinear: points on the same line
Vocabulary: • Plane:
Vocabulary: • Plane: flat surface made up of points
Vocabulary: • Coplanar:
Vocabulary: • Coplanar: Points that lie on the same plane
Use the figure to name each of the following: • a line containing point K J K M L
Use the figure to name each of the following: • a line containing point K • a plane containing point L J K M L
Name the geometric shape modeled by each object. • the long hand on a clock
Name the geometric shape modeled by each object. • the long hand on a clock • a 10 X 12 patio
Name the geometric shape modeled by each object. • the long hand on a clock • a 10 X 12 patio • the location where the corner of a driveway meets the road
Vocabulary: • Undefined terms:
Vocabulary: • Undefined terms: terms only explained using examples and descriptions
Draw and label a figure for each relationship. • plane R contains lines AB and DE, which intersect at point P. Add point C on plane R so that it is not collinear with AB or DE.
Draw and label a figure for each relationship. • plane R contains lines AB and DE, which intersect at point P. Add point C on plane R so that it is not collinear with AB or DE. • QR on a coordinate plane contains Q(-2, 4) and R(4, -4). Add point T so that T is collinear with these points.
A C B S D
A C B • How many planes appear in this figure? S D
A C B • How many planes appear in this figure? • Name three points that are collinear. S D
A C B • How many planes appear in this figure? • Name three points that are collinear. • Are points A, B, C, and D coplanar? Explain. S D
A C B • How many planes appear in this figure? • Name three points that are collinear. • Are points A, B, C, and D coplanar? Explain. • At what point do DB and CA intersect? S D
Assignment: Pgs. 9 - 11 14 - 46 evens