Created by: Sharon Moore Geometry Created 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

ANGLES CAN YOU LABEL EACH ONE? right acute acute obtuse acute acute

Polygon 411: Names and Numbers Triangle Rectangle 4 sides 4 angles 4 points Square 3sides, 3 angles, 3 points 4 sides, 4 angles, 4 points Pentagon Octagon 6 sides 6 angles 6 points Hexagon 8 sides, 8 angles, 8 points 5 sides, 5 angles, 5 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 Angles Isosceles Equilateral Three equal angles No equal sides No equal angles Two equal sides Two equal angles Three equal sides Scalene Obtuse Right Acute Has an angle more than 90° Has a right angle (90°) All angles are less 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 1 circle cylinder 2 sphere n/a cube 12 8 6 square rectangular prism rectangle square pyramid 5 triangles square

Geometry Unit Calendar 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