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they all equal 180 degree
all have 3 sides.
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Is the Pythagorean theorem is true for all similar triangles?
Only right triangles.
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.
What is the common name for a regular triangle?
Such are usually called equilateral triangles.
How many triangles can be made in an octagon by drawing all the diagonals from one vertex?
You Can Get 6 triangles
A pentagon can be divided into how many triangles by drawing all of the diagonals from one vertex?
3 triangles
What do equilateral triangles and acute triangles have in common?
All their angles are less than 90 degrees.
What does all right triangles have in common?
They all comply with Pythagoras' theorem of: a2+b2 = c2
What are triangles that share a common angle?
Equilateral triangles
How many sides is on a right triangle?
In common with all triangles it has 3 sides.
What does an equilateral triangle and scalene triangle have in common?
Both triangles have 3 sides which add up to 180 degrees. In fact, all triangles do.
Some equilateral triangles are not isosceles?
All isosceles triangles are not equilateral triangles
What do all right triangles have in common?
All right angle triangles have a 90 degree angle and two acute angles which all together the 3 angles add up to 180 degrees.
Are all equilateral triangles acute triangles?
Yes all equilateral triangles are acute triangles, but not all acute triangle are equilateral triangles.
What do acute triangles and obtuse triangles have in common?
they are both angkes
Are all triangles semmetrical?
No. But all isosceles triangles and equilateral triangles are.
Are some isosceles triangles equilateral triangles?
All isosceles triangles are not equilateral triangles
What do equilateral triangles have in common with acute triangles?
Everything, since they are one.
