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The three kinds of triangles are:

right triangle :one of the angles is a right angle (i.e. measures 90 degrees)

acute: All of the angles measures less than 90 degrees. A special case of acute is

the equiangular or equilateral triangle in which all angles measure 60 degrees;

obtuse: One of the angles measure more than 90 degrees.

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13y ago
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10y ago

Acute, right and obtuse

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Q: What are three ways to classify a triangles by its angles?
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How many triangles in the large triangle?

If you are talking about the common triangle puzzle, then there are 27 triangles. There are 16 one-cell triangles, 7 four-cell triangles, 3 nine-cell triangles, and 1 sixteen-cell triangle. There is a link to the pic for you also. _______________________________________________________________________ The answer in a two dimensional way would be 27. However, if you take into account that each triangle can be turned three ways, then you can understand that there are actually 81 triangles in all. THen you could ask the question, how many triangles can fit in this space (i.e. the picture)? The answer is the first level of infinitely many, or Aleph zero. This would be by finding the midpoint of each side of the all the 1- cell triangles and creating a new triangle.


How Many Triangles Are In A 5 by 5 Square?

If you have a grid of 5x5 squares you will have no triangles at all since there are no diagonal lines. * * * * * Here is a more likely answer - though I am not sure it is totally correct. A triangle is defined by three vertices. The total number of ways of picking 3 out of 25 points is 25*24*23/(3*2*1) 25 ways of picking a point from the grid at random, 24 ways to pick another point from the grid and 23 to pick the third. Divide by 3*2*1 since the order in which these collinear points is picked does not matter. However, some of these are not triangles: they are not triangles if all three points are in the same row or in the same column. Number of ways for that = 2*(25*4*3)/(3*2*1) 25 ways of picking a point from the grid at random, 4 ways of another point in the same row, 3 ways of picking the third in the same row. Divide by 3*2*1 since the order in which these collinear points is picked does not matter. Multiply by two because the same argument applies for collinearity in columns. So answer = 2300 - 100 = 2200


What are two ways to classify the number 100?

Several ways:Smallest 3 digit integerLog10(Googol)A perfect square


How many ways can you shade three eighths of a square?

233468e4weduigfbeuJ


What are useful ways of finding the value of a variable?

The three primary ways are: - writing an equation - drawing a diagram - reading a table

Related questions

What are the four ways to classify triangles by angle measure?

You can classify triangles by:Whether one of their angles is greater than 90 degrees, equal to 90 degrees, or all angles are less than 90 degreesWhether they have two or three congruent angles (equivalent to having two or three congruent sides)I think that's about it.


What do you write when classifying triangles?

there is many ways to write when classifying a triangle, you can classify it by its sides or angles. When you classify it by angles you can classify it by acute, obtuse, and right triangle. when classyfing it by sides its isosceles, equilateral, and scalene!


What are the different ways to classify triangles?

isosceles -2 equal sides, 1 other length side, 2 equal angles, 1 other angle scalene -all angles and sides different equilateral -all sides and angles same (angles always 60degrees)


How do you classify triangles in two different ways?

Triangles are classed as: scalene, right angle, obtuse, isosceles and equilateral


What are three ways you can prove that triangles are similar?

Two triangles are similar if:two pairs of corresponding angles are equal, orone pair of angles is equal, and the ratios of the lengths of sides adjacent to the angles are the same, orthe lengths of the three pair of corresponding sides are in the same ratio.For the first point, if two angles of one triangle are equal to two of the other, then the third angles = 180 - sum of the two, must be equal.


What are three ways that you can prove that triangles are congruent?

If triangles have the corresponding sides congruent then they are congruent. SSS If two triangles have two sides and an included angle congruent then they are congruent. SAS If two triangles have two angles and an included side congruent then they are congruent. ASA SSA doesn't work.


What are three ways that triangles are congruent?

Triangles are congruent when:All three sides are the same length (SSS congruency)Two sides and the angle between them are the same length (SAS congruency)Two angles and the side between them are the same length (ASA congruency)


Examples of how to classift a triangle in two ways?

You can classify a triangle by its sides or by its angles. I.e: A triangle with three equal sides is an equilateral triangle A triangle with three equal angles is an equiangular triangle A triangle with two equal sides is an isosceles triangle


What are three ways you can classify an angle by sides?

by how long it is


What ways can show that a triangle is similar?

One triangle is similar to another if the angles of one are the same as the angles of the other. Since the three angles must sum to 180, it is enough that two of the angles of one triangle are the same as the corresponding two of the other. Equivalently, the three corresponding sides of the two triangles must be in the same proportion.


When a square sandwich is cut into 2 equal pieces diagonally two triangles are the results classify these triangles in two different ways?

By angle: a right triangle. By sides: an isosceles triangle.


What are the three different ways to classify bacteria?

There shape, if they need oxygen, and where they live.