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All sides must be different.
IsoscelesA triangle with two sides the same.Must have one and only one different from the two that are the same.
EquilateralAll sides are congruent.No sides may be different.
Triangle is also equiangular.
If you name by angles. All angles must add up to be 180o.Acute- All angles are acute.
- Acute is from 1o-89o.
- As a subcategory, triangle may be equiangular.
- All angles are congruent.
- The only time that this is so is if all angles are 60o as the angles MUST add up to be 180o.
- Triangle is also equilateral.
Obtuse is from 91o-179o, but due to angles needing to be 180o in sum, the maximum degree you can see for an angle in a triangle is 178o, and the other two being 1o.
If more than one angle is obtuse, it cannot be a triangle, as it must add up to be 180o. Just two obtuse-angles (91,91) would already add up to be 182o. And there's still a third side!
The other two angles are acute.
RightOne angle is right.A right-angle is 90o, and due to the angles needing to be 180o in sum, there can only be one right-angle. If there were two, the sum would be 180o, but theres still one more angle.
A right-triangle has one right-angle and two acute-angles.
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Some equilateral triangles are not isosceles?
All isosceles triangles are not equilateral triangles
Are all equilateral triangles acute triangles?
Yes all equilateral triangles are acute triangles, but not all acute triangle are equilateral triangles.
Words related to triangle?
Acute, equilateral, isosceles, obtuse, right angle, scalene are all names of different types of triangles.
Why can all triangles tessellate?
because all triangles can be drawn with a compass
What kind of triangles does the Pythagorean theorem work for?
All right-angles triangles. That is triangles that contain one angle at 90 degrees.
What are the names of all triangles and their definitions?
What is the names of all the triangles?
Triangles and their names?
All triangles have 3 sides and 3 interior angles that add up to 180 degrees and they are: scalene, right angle, obtuse, isosceles and equilateral triangles
Some equilateral triangles are not isosceles?
All isosceles triangles are not equilateral triangles
Are all equilateral triangles acute triangles?
Yes all equilateral triangles are acute triangles, but not all acute triangle are equilateral triangles.
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
Are all triangles polgons?
yes. all triangles.
What are the names of the three triangles?
Equilateral, Isosceles and Scalene.
What are two triangles names?
Squares and polygons. DumbA**
Are all equilateral triangles also isoscelles triangles?
Yes. But not all isosceles triangles are equilateral.
Do all triangles have right angles?
No. Only right triangles do, and not all triangles can be right triangles. Equilateral triangles, for example, are always 60°-60°-60°. Isosceles and scalene triangles can be right triangles; all isosceles triangles have the additional useful property of being able to be split into two right triangles.
Are all right triangles isosceles triangles?
no
