The total sum of all angles in any triangle is 180 degrees.
The three angles of a triangle ALWAYS add up to 180 degrees
Not possible. There are an infinite number of triangles that all have that same one angle in them.
Right angled triangles!
Equilateral triangles
acute triangles
Yes, AAA is a way to show that triangles are similar. Note, however, that AAA is not a way to show that triangles are congruent.
No. Right triangles are triangles with one angle exactly 90°, and obtuse angles are triangles with exactly one angle that is greater than, but not equal to, 90°.
AAA, or angle angle angle, is a postulate used to prove the similarities of two triangles. If there exists a correspondence between the vertices of two triangles such that the three angles of one triangle are congruent to the corresponding angles of the other triangle, then the triangles are similar. (AAA)
Pick a point around the center of the polygon. Join each vertex to this point. You will now have 10 triangles. The total angle of these 10 triangles is 10x180 degrees. Now you need to subtract the angles of the ten triangles at the center (which is 360 degrees). Therefore total internal angles is (10x180)-360 = 1800-360 which is 1440 degrees.
They are the triangles that contain a 90 degree angle and two acute angles
Right angle triangles.
Equilateral, isosceles, scalene and right angle triangles.
Right-Angle triangles