math.jpg

Cool Math Terms5th Grade, Unit 3


Term
Definition
Example
& source
Example
& source
Example
& source
Connections to YOUR World
Peer Editors
Equilateral Triangle
A three sided polygon all sides have equal lengths and 60 degree angles.
triangle.png
http://en.wikipedia.org/wiki/Equilateral_triangle
http://poncelet.math.nthu.edu.tw/chuan/talk/full-gsp.html
triangle2.png
http://www.kathykwylie.com/blog/2010/07/more-triangles-in-quilts/ triangle_3.jpg
this is how most triangles look
Ryan A.
Isosceles Triangle
An isosceles triangle has two equal sides and two angles that are the same size.
/web?q=Isosceles+Triangle&search=&qsrc=0&o=0&l=dir
http://ibelieveinhumans.com/wp-content/uploads/2010/09/isosceles-triangle.png
http://ibelieveinhumans.com/wp-content/uploads/2010/09/isosceles-triangle.png

http://www.ask.com/web?q=Isosceles+Triangle&search=&qsrc=0&o=0&l=dir



Zora
Scalene Triangle
A triangle with all sides differet or uneven sides.
http://mathworld.wolfram.com/ScaleneTriangle.html
Scalene triangle
Scalene triangle

http://en.wikipedia.org/wiki/Triangle
external image shape_area_scalene_triangle.png
http://www.onlineconversion.com/images/shape_area_scalene_triangle.png
external image scalene20problem201_0.GIF
http://image.tutorvista.com/content/feed/tvcs/scalene20problem201_0.GIF
There can be little pictures of scalene triangles on cerieal boxes or on company logos.
Jack C.
Congruent
somthing that is the same like a square
http://www.google.com/search?pq=google&hl=en&sugexp=ppwl&cp=18&gs_id=1u&xhr=t&q=congruent+examples&rls=com.microsoft:en-us&gs_sm=&gs_upl=&bav=on.2,or.r_gc.r_pw.,cf.osb&biw=1280&bih=632&wrapid=tljp1320775776990038&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi
external image images?q=tbn:ANd9GcToFQma_R028M5m_PXuzfb3UDIwPrLDsSnuGgrLzQbGpdXxvB2idg
external image fig_congru_tri1-no-sign.png

Somthing congruent is like cabnint doors.
Ryan C.
Pentagon
A five sided polygon which all of the sides are the same.




Lucas D.
Perimeter
The sum of all the sides of a shape. Or :The total distane around a shape.
http://www.mathgoodies.com/lessons/vol1/perimeter.html
external image PERIMETER_OF_POLYGONS_01.GIF
http://www.education.com/study-help/article/perimeter-polygons/



Ashley D.
Acute Angle
An Acute Angle is an angle greater than 0 degrees and less than 90 degrees.
angle.gif



Merritt D.
Adjacent Angles





Paul F.
Arc





Carissa H.
Census
The count of people or things living in a certian area.
census2010_logo.jpg
http://forefugees.com/2011/03/14/2010-census-didnt-count-many-new-refugees-in-lexington-ne/


There is a US cencus
Katherine H. & Lauren S.
Diameter
A symmetric line tha goes through the center of a circle.
http://www.golfingmachinist.com.au/article.php?id=13
diameter_only.gif


I see diameters in math books.
Lucas H.
Obtuse Angle
An angle that is 90 degrees to 180 degrees.
external image obtuse-angle.gif



Reese H.
Radius
A straight line sgment drawn from the center of a circle to its outer edge.
radius.gifhttp://www.historyforkids.org/scienceforkids/math/geometry/radius.htm


I see them on the lines in cds and also i see them on some signs.
Shannon S.
Reflex Angle
The reflex angle is the larger angle.
It is more than 180° but less than 360°
http://www.mathsisfun.com/reflex.html
Reflex Angle
Reflex Angle




Jordan L. & Gus K.
Regular Polygon
A closed plane figure with 3 or more sides

www.math.com
websters college dictionary


Ruby M.
Right Angle
A right angle is an angle that measures 90 degrees
right_angle.pngRight Angle picture link!


I can see right angles inside when two corners meet like a picture frame or when a chair meets the floor.I can also see right angles outside like the corners of buildings meeting or roads crossing.
Kelsey M.
Regular Tessellation
A regular tessellation is made up
of only one kind of regular polygon.
Regular Tessellationexternal image images?q=tbn:ANd9GcSEB1GZtp7VzwfQZFfnAWiPzK0FCYNydDdUUoF6u4IGE8ZDVXu9


There can be regular tessellations in a lot of places like coloring books or signs.
Maggie M.
Straight Angle
A straight angle is an angle that is compeatly straight. A straight angle is also a 180 degree angle
a straight angle is in a straight line for example on a clock when it is 12:30 it is a 180 degree angle.Red writing by carolinep.
angles.jpg
The last one as you can see the last one is an 180 degree angle and there are some other angles too to look at
pic put on by carolinep.
some of my resources are from my brain and
http://www.freematheducation.com/tutorials/types-of-angles.html by caroline p.


Maybe if you have a square table the edge is an 180 degree angle
C-line P.
Reese
Tessellate





Nate R.
Tessellation
Riley R.:
a tessallation has shapes that dont overlap. There are no gaps between the shapes. And the vertex point must be 360 degres. Any more the shapes overlap
external image 300px-Wallpaper_group-p3-1.jpg
Tessellation Picture Link


A kition counter could have a tessellation print.
Riley R. & Zora W.
Tessellation Vertex
A Tessellation (or Tiling) is when you cover a surface with a pattern of flat shapes so that there are no overlaps or gaps.




Will R.

Triangles
A triangle is a shape with 3 sides and no curves or holes.




Caroline S.
Reese



Vertical (or opposite) angles
Vertical angles are angles that are opposite each other when two lines inresect. If two angles are vertical angles, they have the same measure in degrees.
Source: pg. 139 in SRB.




Preston S.