An obtuse triangle is a triangle that has one obtuse angle.

S is for Square

A square is a four sided polygon that has all congruent sides, all congruent, right angles and two sets of parallel lines.

W is for Width

F is for Face

K is for Kite

A kite is a type of quadrilateral that has two adjacent pairs of congruent lines.

In the picture shown, line AB is congruent to line BC and line AD is congruent to line DC.

A is for Area

Area is the amount of space that something takes up.

**The ABC's of 6th Grade Geometry**

G is for Geometry

Geometry is a section of mathematics that works with points, lines, polygons, three-dimensional shapes, etc.

L is for Length

This is a two-dimensional measurement and is usually used to find the area or perimeter of a shape. This can also be used to find the volume of a three-dimensional shape.

Width is a two-dimensional measurement usually used to find the area or the volume of a three-dimensional shape.

How to navigate through this book:

Click on the present button on the bottom of the page. Use the back and forward arrows to navigate through this book. This book works best if utilized at full screen.

6th Grade Common Core Math Standards

6.G.1: Find the area of right triangles, other triangles, special quadrilaterals, and

polygons by composing into rectangles or decomposing into triangles and

other shapes; apply these techniques in the context of solving real-world

and mathematical problems.

6.G.2. Find the volume of a right rectangular prism with fractional edge lengths

by packing it with unit cubes of the appropriate unit fraction edge lengths,

and show that the volume is the same as would be found by multiplying

the edge lengths of the prism. Apply the formulas V = l w h and V = b h to

find volumes of right rectangular prisms with fractional edge lengths in the

context of solving real-world and mathematical problems.

B is for Base

The side or edge of a face of a polygon. Perpendicular to the height of the polygon.

C is for Congruent

Two or more shapes that have the same size and shape.

H is for Hexagon

M is for Measurement

Measurement is a number that shows the size or amount of something.

P is for Parallelogram

A parallelogram is a quadrilateral that has at least one pair of congruent sides and two pairs of parallel lines.

Q is for Quadrilateral

A quadrilateral is a four sided polygon. There are different types of quadrilaterals including squares, rhombuses, parallelograms, rectangles, kites and trapezoids.

T is for Trapezoid

A trapezoid is a four sided polygon that has only one set of parallel lines. You can have an isosceles trapezoid, a scalene trapezoid or a right trapezoid.

U is for Undecagon

An undecagon is a polygon that has eleven sides. You can have a regular undecagon and an irregular undecagon.

X is for X-axis

The x-axis is the horizontal axis that is on a coordinate plane.

Y is for Y-axis

The y-axis is the vertical axis on a coordinate plane.

Z is for Z-axis

Z-axis is the axis that allows for three-dimensional shapes. When compared to the x-axis and the y-axis, the z-axis is perpendicular to the coordinate plane.

V is for Volume

Volume is a measurement that measures how much space a three-dimensional shape takes up.

R is for Rhombus

A rhombus is a four sided polygon that has four congruent sides, two sets of parallel sides and two sets of congruent angles.

N is for Nonagon

A nonagon is a polygon with 9 sides.

I is for Isosceles triangle

An Isosceles triangle has two congruent sides and two congruent angles.

D is for Dimension

The first dimension can only contain points. The second dimension can contain points and lines. The third dimension can contain points, lines and three-dimensional shapes.

E is for Equilateral triangle

An equilateral triangle is a triangle that has all congruent sides and all congruent angles.

J is for Joint

A joint is when two shapes, edges or points meet.

Check out the link below to play with a geoboard to find the area of different shapes.

http://www.mathplayground.com/geoboard.html

Check out the game below to classify different types of triangles:

http://www.math-play.com/classifying-triangles/Triangles-Drag-and-Drop-Game.html

The website below leads to a game where you can learn more about quadrilaterals:

http://www.sheppardsoftware.com/mathgames/geometry/shapeshoot/QuadShapesShoot.htm

**Picture References**

http://www.wyzant.com/resources/lessons/math/geometry/areas/parallelograms_and_triangles

http://media-cache-ak0.pinimg.com/236x/1e/78/83/1e7883ee643cdcc4e178b98b9eda74b3.jpg

https://www.iconfinder.com/icons/44859/cube_icon

http://www.11plusforparents.co.uk/Maths/shape8.html

http://10binary.deviantart.com/art/hexagon-rainbow-target-286203089

http://etc.usf.edu/clipart/42600/42601/irreghex_42601.htm

http://www.icoachmath.com/math_dictionary/isosceles_triangle.html

http://www.wyzant.com/resources/lessons/math/geometry/quadrilaterals/trapezoids_and_kites

http://www.education.com/study-help/article/surface-area-word-problems/

http://www.wpclipart.com/education/geometry/nonagon_9_sides_with_label.png.html

http://www.ebay.com/itm/YOURE-SO-OBTUSE-TRIANGLE-t-shirt-funny-trig-math-nerd-shirt-CHOOSE-SIZE-S-XXL-/360598082284

http://www.mathsisfun.com/geometry/parallelogram.html

http://www.xpmath.com/careers/topicsresult.php?subjectID=3&topicID=6

http://www.mathatube.com/geometry-area-of-rhombus.html

http://www.gogeometry.com/geometry/median_of_a_trapezoid_theorems_problems_index.html

http://www.mathwords.com/u/undecagon.htm

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

http://www.ducksters.com/kidsmath/finding_the_volume_of_a_cube_or_box.php

http://www.mathsisfun.com/definitions/x-axis.html

http://en.wiktionary.org/wiki/z-axis

Cube

Check out the website below to learn more about equilateral triangles:

http://www.brainpop.com/math/geometryandmeasurement/typesoftriangles/preview.weml

The flat space that makes up a three-dimensional shape.

A cube has 6 faces

Click the link below to learn more about faces, edges, and vertices:

http://www.11plusforparents.co.uk/Maths/shape8.html

Click the link below to learn more about Geometry:

http://www.math.com/homeworkhelp/Geometry.html

A hexagon is a six sided polygon.

You can have a regular hexagon which has 6 congruent sides or you can have an irregular hexagon which is just a six sided polygon.

regular hexagon

irregular hexagon

Learn more about the types of measurements here:

http://www.mathsisfun.com/measure/index.html

Check out the garden activity under the Area title

Check out the video below that talks about the properties of square.

regular undecagon

irregular undecagon

Learn how to find the volume of a rectangular prism by clicking the link below and starting the video.

https://learnzillion.com/lessons/1062-find-the-volume-of-a-rectangular-prism-by-filling-it-with-unit-cubes

6th Grade Common Core Math Standards

6.G.3. Draw polygons in the coordinate plane given coordinates for the vertices;

use coordinates to find the length of a side joining points with the same

first coordinate or the same second coordinate. Apply these techniques in

the context of solving real-world and mathematical problems.

6.G.4. Represent three-dimensional figures using nets made up of rectangles and

triangles, and use the nets to find the surface area of these figures. Apply

these techniques in the context of solving real-world and mathematical

problems.

**By: Elizabeth Leimkuehler**