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Q: What is the 45 45 90 triangle theorem?

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If its angles are 45, 45 and 90 degrees then it is an isosceles right angle triangle and its properties can be worked out using Pythagoras' theorem and trigonometry

Using Pythagoras' theorem

you might be able to use tangent, sine, or cosine. you might be able to use the Pythagorean theorem, or you can used 30-60-90 triangle theorem or 45-45-90 triangle theorem

The other sides are both 16. This is because in a 45-45-90 triangle the legs are congruent because of the isosceles triangle theorem, and also the hypotenuse of the triangle is equal to the leg times root 2. That is because of the 45-45-90 triangle theorem. So in a summary the legs are congruent and the hypotenuse is equal to the leg times root 2.

4.949747468 units, solved with the help of Pythagoras' theorem.

4.949747468 units (solved by using Pythagoras' theorem)

A triangle with a 90 and two 45 degree angles is an isosceles right angle triangle.

In an isosceles triangle, two angles, and therefore sides (Base Angle Theorem), are congruent. This does not mean that all isosceles triangles are also right triangles - there is only one (45, 45, 90 triangle).

It is an isosceles triangle. 45 + 45 + 90 = 180 degrees

Yes.

No because an isosceles triangle has various two congruent angles. A 45-45-90 triangle is technically an isosceles triangle.

Use Pythagoras' theorem: Each leg is about 14.14213562 units in length.

7.778174593 units, solved with the help of Pythagoras' theorem.

Left triangle.

It is a right angled isosceles triangle.

False because in any right angle triangle Pythagoras' theorem states that a^2 +b^2 = c^2 whereas 'a' and 'b' being the legs of the triangle with 'c' as its hypotenuse

If two angles of a triangle each measure 45 degrees, the third angle measures 90 degrees. This is because of the Triangle Sum Theorem - The sum of the measure of the interior angles of a triangle is 180 degrees. If you know that two of the angles total to be 90 degrees, you can subtract that 90 degrees from the total 180. The result is 90 degrees.

There are many theories and formulas that can be applied to find the length of each of the sides of a triangle. The most common is the Pythagorean Theorem: a2+b2= c2 . The letters: "a , c" are the two legs. The hypotenuse is the letter "c". For a 30-60-90 triangle you can use a special formula, as well as a 45-45-90 triangle.

Right triangle ( triangle in which one angle is 90 degrees)

90

It can be similar to each other with the base angles theorem. It would be 90 degrees and on the bottom would be both 45 degrees and if you would turn it sideways, there is your right triangle.

A 90, 45 and 45 degree triangle

That is a icocsles triangle.

Yes

yes it is