Only right triangles.
NO!!!! Only to right angles (90 o) triangles. For other types of triangle, you have to use a construction line, which has a right angle in it.
If it is in the form of two inverted triangles, then there are 8 triangles. If only the outline is used, there are 0 triangles.
Only if they have the same angles
By using the formula a2+b2=c2, where a is one side of the right-angled triangle and b is the other side of the right angle triangle. C stands for the hypotenuse of the right-angled triangle. Note: this formula only works for RIGHT-ANGLED TRIANGLES!!!
No, it applies to all triangles.
No, it applies to all triangles.
Trigonometric ratios, by themselves, can only be used for right angled triangles. The law of cosines or the sine law can be used for any triangle.
a2+b2=c2, but that only works for right triangles, where c is opposite the right angle. The law of cosines, see Related Link below, will help for non right triangles, but you need to know one of the angles.
No. It can be used on any triangle.
Yes. The Pythagorean Theorem is true for only right triangles. However, a variety of other similar equations can be used for other triangle types. Law of Sines: a/sinA = b/sinB = c/sinC Law of Cosines: c2 = a2 + b2 - 2ab*cosC
Yes. But only right triangles.
no only right triangles
No, only right triangles
yes
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.
Only right triangles.