0
Add your answer:
Earn +20 pts
Do triangles always have three lines of symmetry?
No, scalene triangles, which have sides of different lengths, have none. Isosceles triangles, with only two sides the same, only have one.
Is it true that No scalene triangles are similar?
Oh, no, that isn't true. We could have a scalene triangle with sides of, say, 2 cm, 3 cm, and 4 cm. Then we could have another scalene triangle with sides of 4 cm, 6 cm, and 8 cm. These two triangles would be similar because they have a ratio of 1:2, despite the fact that they are scalene. The term 'scalene' has nothing to do with similarity; it just means that a triangle has no equal sides.
Is that true that if two congruents triangles are always similar?
Yes.
Are two obtuse triangles sometimes always or never similar?
sometimes
Are two equilateral triangles sometimes always or never similar to each other?
Since triangles have three sides and must have interior angles equal to pi or 180o, the three interior angles in all equilateral triangles will be pi/3 or 60o.However, equilateral triangles must also have equal side lengths. Since equilateral triangles with interior angles of 60o will not necessarily have the same side lengths, two equilateral triangles will sometimes be similar to each other.
Are two obtuse triangles always similar?
Not always, sometimes two obtuse triangles are similar and sometimes they are not similar.
What triangles always have three sides of different lengths?
Scalene triangles. All three are different: Scalene Two are the same: Isosceles All three are the same: Equilateral
Two equilateral triangles are sometimes similar?
Two equilateral triangles are always similar!
Are two scalene triangles with congruent angles similar?
When all of their corresponding angles are congruent (in any triangle, in fact) then the triangles are similar. Similarity postulate AAA. (angle-angle-angle)
Are some scalene triangles also isosceles triangles?
Scalene triangles those triangles in which all the sides are of different lengths, but in isosceles triangles two sides of the triangle are equal in length. Therefore, no scalene triangle can ever be isosceles.
Do triangles always have three lines of symmetry?
No, scalene triangles, which have sides of different lengths, have none. Isosceles triangles, with only two sides the same, only have one.
What kind of triangles are formed if the parallelogram is divided into two?
You would get two scalene triangles.
What are iscosoles and scalene triangles?
iscosoles triangles have two angles that are equal with two of the same lenght sides and scalene triangle have no sides or angles that are the same
Are two isosceles right triangles always similar?
No
If the vertex angles of two isosceles triangles are congruent are the triangles always similar?
Yes, they are.
Is it true that No scalene triangles are similar?
Oh, no, that isn't true. We could have a scalene triangle with sides of, say, 2 cm, 3 cm, and 4 cm. Then we could have another scalene triangle with sides of 4 cm, 6 cm, and 8 cm. These two triangles would be similar because they have a ratio of 1:2, despite the fact that they are scalene. The term 'scalene' has nothing to do with similarity; it just means that a triangle has no equal sides.
Are an isosceles and a scalene triangle always similar?
No. An isosceles has two equal sides and two equal angles. A scalene has no equal sides and no equal angles.
