2020-09-28 15:08
There are a lot of algebraic identities. One of the most commonly used identity is the identity (a+b)^2 = a^2 + 2ab + b^2.Did you ever wondered where did it came from? There are va… Read More
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angle
exterior angle
triangle
exterior angle theorem
paper
number
algebraic identity
greek
identity
pythagorean theorem
This is the extension of the Mathematics Realm blog. This site provides information, lessons and tutorials on specific topics from different areas of mathematics.
2014-11-22 16:24
The Pythagorean TheoremHere is another proof for the Pythagorean Theorem. You can see the first part here.Start with a cutout of a right triangle.Cut three more cutouts.Let us name the sides… Read More
2014-11-17 14:53
Here is the two-column proof for the EXTERIOR ANGLE THEOREM. You may download and print it for your perusal.Your comments and suggestions are welcome here. You may write them in the comment… Read More
2014-04-06 09:58
Many are already familiar with the angles of a triangle. Many can easily point out which are the interior angles and even draw the exterior angles.On the other hand, how many are you are fam… Read More
2014-04-06 09:57
This is the second part of the proof that the sum of the measures of the angles of a triangle is 180 degrees. This is actually the second method. The first one is more on using manipulatives… Read More
2014-04-06 09:55
Everybody knows that the sum of the measures of the angles of any triangle is 180 degrees. If I may ask each one of you why, one of the reasons that I may probably hear is that "Our math tea… Read More
2014-03-23 14:11
This is the second version of the downloadable graphing paper that can be used for math and science classes. The size of this grid paper is a4 (8.27in. x 11.69 in or 210mm x 297 mm). You may… Read More
2014-03-23 14:10
Here are the variations of the DAMATH board available for download. You may choose which one is applicable for your class/school.If you have any suggestions regarding the form or appearance… Read More
2014-03-23 14:08
The letters of the Greek alphabet is commonly used to represent variables, constants, functions and more. They are used in different areas of mathematics and sciences. Here is a downloadable… Read More
2014-03-23 14:07
Maybe you are wondering why or how can 1 be equal to 2. Let us look at the following proof:First, let us have two real numbers a and b whereUsing the addition property of equality, let us ad… Read More
2014-03-20 15:43
This is one of the useful materials in Mathematics - the graphing paper or grid paper. The following graphing paper is designed for classroom use. It may be used not only for mathematics sub… Read More
2014-03-20 15:43
Welcome to a new site of Mathematics Realm. This is an extension of the realm where you can find discussions, tutorials, and downloads for the different branches of mathematics.It will inclu… Read More
2006-06-07 11:16
Pythagorean Theorem Exploration 2 CutoutsHere is the second part of the previous post (Pythagorean Exploration 1 cut-outs). The first one uses the other two sides (a and b) of the right tria… Read More
2006-06-07 11:16
Here is another proof of the Pythagorean theorem.Let us use a right triangle and name the shortest side as a, the longer side as b, and the hypotenuse as c.Let us make three more of these so… Read More
2006-06-07 11:16
The Pythagoras' TheoremThe Pythagorean theorem is also known as the Pythagoras' theorem. It is named after a famous Greek mathematician, Pythagoras, who is credited for its proof.The theorem… Read More
2006-06-07 11:16
Pythagoras Theorem CutoutsIn the previous posts, two different explorations were presented for the derivation of the Pythagoras Theorem. The first exploration can be found here and the secon… Read More
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