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Geometry Vocabulary & Formulas

K. Wilhite ED TECH 541

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Additional Information

Watch for Moby throughout the presentation. When you click on him, you can view a video with more information.

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Parallel LinesTwo straight lines that lie in the same

plane thatwill never cross

Photo used under Creative Commons from Ko: (char*)hook

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Perpendicular LinesTwo straight lines that cross each other

at a 90o

angle

Photo used under Creative Commons from all brown

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TransformationsThe different ways objects can

bemoved on a coordinate planeFor more practice problems, click here

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Transformations

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ReflectionA mirror image of an object

Photo used under Creative Commons from Jheat

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RotationThe turning of an object around a

given point

Photo used under Creative Commons from Juliana S.

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TranslationThe movement of an object from spot

toanother

Image created by K. Wilhite

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Acute TriangleA triangle that is made up of three

angles thatmeasure less then 90o

Photo used under Creative Commons from jared.anderson4

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Obtuse TriangleA triangle that is made up of an angle

thatmeasures greater then 90o but less

then 180o

Photo taken by K. Wilhite

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Right TriangleA triangle that is made up of one 90o

angle

Photo used under Creative Commons from Parth Joshi

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Area of Triangles

Image created by K. Wilhite

For a video lesson and practice problems, click here

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RectangleA quadrilateral that contains four 90o

angleswith opposite sides parallel

Photo used under Creative Commons from Jheat

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Area of Rectangles

Image created by K.. Wilhite

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CircleA round plane whose boundary

(circumference)is made up of points that are the same

distancefrom the center point (radius)

Photo used under Creative Commons from Timothy Valentine

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Area of a Circle

Image created by K. Wilhite

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TrapezoidA quadrilateral with exactly one set of

parallellines

Photo used under Creative Commons from ocherdraco

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Area of a Trapezoid

Image created by K. Wilhite

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ParallelogramA quadrilateral with opposite sides

parallel

Photo used under Creative Commons from Peter Rosbjerg

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Area of a Parallelogram

Image created by K. Wilhite

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CubeA 3D shape that consists of 6 faces

made up ofcongruent squares

Photo used under Creative Commons from ocherdraco

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Volume of a Cube

Image created by K. Wilhite

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Rectangular PrismA 3D shape that consists of 6 faces

made up ofrectangles

Photo used under Creative Commons from Bad Alley

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Volume of a Rectangular Prism

Image created by K. Wilhite

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CylinderA 3D shape that consists of circular

base andstraight parallel sides

Photo used under Creative Commons from brookewill

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Volume of a Cylinder

Image created by K. Wilhite

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SphereA 3D shape that consists whose

boundary ismade up of points that are the same

distancefrom the center point.

Photo used under Creative Commons from mlaudisa

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Volume of a Sphere

Image created by K. Wilhite

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PyramidA 3D shape that consists of a square

base andfour faces that are triangles

Photo used under Creative Commons from Neil B.

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Volume of a Pyramid

Image created by K. Wilhite

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More math videosArea of polygons

Perimeter and Area of RectanglesPerimeter and Area of TrianglesVolume and Surface AreaCircumference and Area of Circles

Geometry

Geometry

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ResourcesBBC Schools. (n.d.). Retrieved February 18, 2013, from BBC Schools: http://www.bbc.co.uk/schools/

BrainPop. (n.d.). Retrieved February 18, 2013, from www.brainpop.com: www.brainpop.com

Khan Academy. (n.d.). Retrieved February 18, 2013, from Khan Academy: https://www.khanacademy.org/

M.D. Roblyer and Aarom H. Doering. (2013). Integrating Educational Technology into Teaching. Upper Saddle River: Pearson.

squidoo. (n.d.). Retrieved February 21, 2013, from squidoo: http://www.squidoo.com/cc-flickr

Teachnology Tutorials. (n.d.). Retrieved February 21, 2013, from Teachnology: http://www.teach-nology.com/tutorials/powerpoint/