Mr. Calise Honors Geometry Room 306 Unit A Section 1

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Mr. Calise Geometry Room 306 Unit A Section 1

Presentation transcript:

Mr. Calise Honors Geometry Room 306 Unit A Section 1 Welcome Back! Hope you had a Great summer!

Drill: Wed 8/27 Look at the picture at right. List as many geometric terms as you can that are represented in the photo. Objective: Identify, name, draw, and apply basic facts of points, lines, segments, rays, and planes.

What is Geometry? Brain Pop Video Log In Info Name: baltcops Password: brainpop All other geometry is defined from points, lines, and planes

A bit that’s new, a bit of review… Vocabulary 1) Point 2) Line 3) Segment 4) Collinear 5) Parallel Lines 6) Perpendicular Lines 7) Skew Lines 8) Plane 9) Coplanar 10) Ray 11) Opposite Rays 12) Parallel Planes A1 activity

Point

Notes(Vocab) Points: have no size, often represented with dots, and named with a capital letter. C A B

ine

Lines: have no thickness, and extend infinitely in two directions Lines: have no thickness, and extend infinitely in two directions. Named with two points, or a cursive letter. l Y X

segmen

Segments: Are parts of lines, they have two endpoints, and are named by using the two endpoints.

inea col

Collinear: points that are lying in the same line. Non-Collinear: Not lying in the same line. A B C C A B

el para

Parallel Lines: are lines that are in the same plane and do not intersect. (Same Direction)

per pend icular

Perpendicular: Perpendicular Lines Form Right Angles (90o)

Skew Lines

Skew Lines: Lines that are in different planes Skew Lines: Lines that are in different planes. (Different Directions and do not intersect)

P LANE

Planes: Extend infinitely in all directions Planes: Extend infinitely in all directions. It is flat and has no thickness. There are two ways to name a plane. To Name a plane you need 3 non-collinear points. You can also use a capital cursive letter.

COP ANAR

Coplanar: Points and lines that are in the same Plane.

R A

Rays: is a “half-line”. It has one endpoint and extends infinitely in one direction.

Opposite R A S

Opposite Rays: share the same endpoint and go in opposite directions.

Parallel Planes

Parallel Planes: Two planes that never intersect.

Examples

Examples

Intro Questions What are parallel lines? True or False: Any two points are collinear. True or False: Any three points are collinear. Solve for x: 2x – 8 = x + 12

A C B I D E H F G

Wrap-Up Homework: Look through a magazine, newspaper, website, brochure, etc.. and cut out and label five examples of Unit A vocabulary words in the real world.

Rectangular Prism Net Interactive Website for Prisms Rectangular Prism Sketchpad opposite rays, space, collinear, coplanar, perpendicular, parallel, parallel planes, and perpendicular planes