# Geometry

## Geometry = Math of Euclid. Geometry is the Branch of math known for shapes (polygons), 3D figures, undefined terms, theorems, axioms, explanation of the universe, and pi.

###### Asked in Miscellaneous, Geometry

### How big is 36x24?

36x24 what value? inches, feet, yards, miles,metres,centimetres,
millimetres? It's impossible to answer in that context.
If you only mean 36x24 as a multiplication problem, then it
equals 864.
If you want to simplify 36x24 ( like a ratio, I guess), then it
becomes 18x12, 9x6, and 3x2.
* * * * *
I disagree with the last sentence because a ratio is denoted by
":" or "/", not "x".

###### Asked in Math and Arithmetic, Geometry

### What is the width of a house in meters?

This cannot be answered without more information.
No it can't, and I'm amazed how many enquirers seem not to
realise that.
However, I suspect this enquirer really wanted to know how to
convert the dimension from feet to metres. (That is the right
spelling - it's a French invention and word.)
If so, 1 metre = 3.280 feet or 1 foot = 0.305 metre.

###### Asked in Geometry, Math and Arithmetic, Algebra

### What instrument measures angles?

A protractor, compass, speed square, goniometer, theodolites,
sextant, or angle finder can be used to measure angles.
A protractor is a circular or semi circular instrument for
measuring angles and some have existed from ancient times. A half
circular protractor is marked for 180 degrees and a full circle for
360 degrees. Protractors usually have two sets of numbers going in
opposite directions, so be careful which side you use. When in
doubt you should ask yourself is the angle greater or smaller that
90 degrees.
An inclinometer measures the slope (aka grade or "incline") on
mountain roads and trails.
Practice lining up and reading a protractor while you measure a
set of angles in this fun learning activity. The angles may range
from 0Â° to 180Â°. The interactive protractor is already lined up
with the vertex of each angle but you will have to rotate the
protractor into proper position. The margin of error is only 1Â°
and you must report measurement to the nearest whole number.
A protractor measures angles whereas a
compass draws angles.
The typical protractor is 180 degrees. Protractors can also be
circular and measure up to a full 360 degrees. Other methods of
measuring angles include using a compass, and length measuring
devices (rulers, tape measures, etc.) combined with trigonometry.
Estimated angle measures can also use "devices." For example, the
corner of a page can tell you if an angle is greater than or less
than 90 degrees.
Navigators in the old days would use a sextant for measuring
angles. In more recent times they used a transit. A quadrant is yet
another tool for measuring the angle between the horizon and
heavenly bodies, also useful for navigation.
A protractor can be used to measure an angle.

###### Asked in Math and Arithmetic, Geometry

### What is a non regular tessellation?

Non-regular tessellations is a tessellation in which there is no
restriction on the order of the polygons around vertices. There is
an infinite number of such tessellations.
These are tessellations with nonregular simple convex or concave
polygons. All triangles and quadrilaterals will tessellate. Some
pentagons and hexagons will.

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