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.

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.

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

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

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.

Cool Math Terms5th Grade, Unit 3

TermDefinitionExample& sourceExample& sourceExample& sourceConnections to YOUR WorldPeer Editorshttp://en.wikipedia.org/wiki/Equilateral_triangle

/web?q=Isosceles+Triangle&search=&qsrc=0&o=0&l=dir

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

http://mathworld.wolfram.com/ScaleneTriangle.html

http://en.wikipedia.org/wiki/Triangle

http://www.onlineconversion.com/images/shape_area_scalene_triangle.png

http://image.tutorvista.com/content/feed/tvcs/scalene20problem201_0.GIF

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

http://www.mathgoodies.com/lessons/vol1/perimeter.html

http://www.education.com/study-help/article/perimeter-polygons/

http://forefugees.com/2011/03/14/2010-census-didnt-count-many-new-refugees-in-lexington-ne/

## Lucas H.

## Obtuse Angle

It is more than 180° but less than 360°

http://www.mathsisfun.com/reflex.html

websters college dictionary

of only one kind of regular polygon.

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.

some of my resources are from my brain and

http://www.freematheducation.com/tutorials/types-of-angles.html by caroline p.

Reese

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

Tessellation Picture Link

Tessellation(orTiling) is when you cover a surface with a pattern of flat shapes so that there are no overlaps or gaps.Reese

Source: pg. 139 in SRB.