Every triangle must have at least two acute angles.
The third one can be acute, right (90 degrees), or obtuse.
An obtuse angle
An obtuse triangle
It is an obtuse triangle if its 2 other acute angles are different in sizes.
Acute, obtuse and opposite angles are equal
well... first you must say what kind of triangle it is whether its isisceles or anything else and then meausre the angle and there you go. ex. acute obtuse equalateral triangle.
An obtuse angle
An obtuse triangle
It is an obtuse triangle if its 2 other acute angles are different in sizes.
With any type of triangle, the angles add up to 180 degrees. It does not matter if it is equilateral, scalene, or acute, or even right, obtuse, or acute.
Acute, obtuse and opposite angles are equal
It is an obtuse scalene triangle
There are 3 acute angles and 2 obtuse angles in the letter A.
All triangles have 3 sides and 3 interior angles that add up to 180 degrees and they are classed as follows:- 1 Scalene triangle has 3 acute angles of different sizes 2 Right angle triangle has a 90 degree angle and 2 acute angles 3 Obtuse triangle has an obtuse angle and 2 acute angles 4 Isosceles triangle has 2 equal angles plus another angle 5 Equilateral triangle has 3 equal 60 degee angles
It can have angles which are acute, right, obtuse or reflex. Not straight angles, though.
well... first you must say what kind of triangle it is whether its isisceles or anything else and then meausre the angle and there you go. ex. acute obtuse equalateral triangle.
In normal geometry, it's not possible to make a triangle with two obtuse angles. It is possible to make a triangle with two obtuse angles in spherical geometry -- it's a kind of "spherical triangle". It is possible to make a triangle with two obtuse angles in some kinds of non-Euclidean geometry -- it's a kind of "non-Euclidean triangle".
If one angle is a right angle, it is a right triangle. If one angle is an obtuse angle, it is an obtuse triangle. If there are no right nor obtuse angle then it is an acute triangle.