GeometryCreated by:

Sharon Moore

A point has no length or width, it just specifies an exact location.

A line is a series of points that extend forever in both directions.

A line segment does not extend forever, but has two distinct endpoints.

A ray begins at a certain point and extends forever in one direction.

Parallel Lines

Intersecting Lines

Perpendicular Lines

ANGLESCAN YOU LABEL EACH ONE?

acute

acute right

acute

acuteobtuse

Polygon 411: Names and NumbersTr

iang

le

3sides, 3 angles, 3 points Square

4 sides4 angles4 points

Rectangle

4 sides, 4 angles, 4 points

5 sides, 5 angles, 5 points

Pentag

o

n

Hexagon

6 sides6 angles6 points

Octagon

8 sides, 8 angles, 8 points

Circles A circle is: “the set of

all points” that are a fixed distance from a central point".

The radius is the distance from the center to the edge.

The Circumference is the distance around the edge of the circle.

Circles cont.

A line that goes from one point to another on the circle's circumference is called a Chord.

If that line passes through the center it is called a Diameter.

If a line "just touches" the circle as it passes it is called a Tangent.

And a part of the circumference is called an Arc.

Triangles: Sides and AnglesE

quila

tera

l

Isosceles

Scalene

Acute Right Obtuse

Three equal sides

Tw

o equal sides

No

equa

l sid

es

Tw

o eq

ual a

ngle

s

Three equal angles

No equal angles

All angles are less than 90° Has a right angle (90°) Has an angle more than 90°

Quadrilaterals: 4 sided shapes

Does a shape change if you move it?

Rotation Turn!

Reflection Flip!

Translation Slide!

NO! In Geometry, "Translation" simply means moving.

Check out this website and see for yourself.

Alphabet Geometry: Flips, Slide, Turn

Symmetry Are you symmetrical?

Coordinate Grids

Mathwire.com | Coordinate Geometry

Geometric Solids

Name of solid

# of edges# of

vertices# of faces

Name(s) of faces

cone 0 1 1 circle

cylinder 0 0 2 circle

sphere 0 0 0 n/a

cube 12 8 6 square

rectangular prism

12 8 6rectangle square

pyramid 8 5 5triangles square

DAY 1 Introduction to Geometry: Points, Rays, Line Segments, Lines, Angles

DAY 2 Intersecting, Parallel and Perpendicular Lines

DAY 3 Angles: Acute, Right, and Obtuse

DAY 4 2 Dimensional Shapes Square, Rectangle, Triangle, Hexagon

DAY 5 Polygons: Names and Numbers

DAY 6 Is it or is it

not a polygon? Circles: radius,

diameter, chord

DAY 7 Triangles: Acute, Right, Obtuse, Scalene, Isosceles, Equilateral

DAY 8 Quadrilaterals: Square, Rectangles, Parallelogram, Trapezoid, Rhombus

DAY 9 Motions: Flip, Slide & Turn Similar vs. Congruent

DAY 10 Are you

symmetrical? Lines of

symmetry

DAY 11 Using

Geometry: Mapping points on coordinate

grids

DAY 12 Using

Geometry: Turn 2D

shapes in 3D solids

DAY 13

Analyze 3-dimensional solids: edge, vertex, and

face

DAY 14 Review

Geometry Unit

DAY 15 Assessment

Geometry Unit Calendar