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An isosceles triangle only requires that two of its inside angles be equal to eachother. Therefore, a right angle triangle (90 degree inside angle) with two 45 degree inside angles on the the two other corners would be considered an isoceles triangle. However, this would be the ONLY right angle triangle that would be considered an isoceles triangle since all inside angles must add up to 180 (90+45+45=180).
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Are some isosceles triangles equilateral triangles?
All isosceles triangles are not equilateral triangles
Is a triangle a symmetric shape yes or no?
Some triangles are symmetric, while others are not. All equilateral and isosceles triangles are symmetric.all triangles are symmetric.
Does an acute triangle have two congruent sides?
Not every acute triangle has two congruent sides, although some do, in which case they are called isosceles triangles.
What are some methods that can prove triangles congruent?
SSS - Side-Side-SideAll three corresponding sides of the triangles have the same length AAS - Angle-Angle-Side; ASA - Angle-Side-AngleTwo corresponding angles are equal and a corresponding side is equal SAS - Side-Angle-SideTwo corresponding sides have the same length and the enclosed angle is the same. Note: it is important that the angle is the one between the corresponding sides of equal length.RHS - Right_angle-Hypotenuse-SideIn a right angled triangle the hypotenuse and a corresponding side must be equal.
What are some special right triangles?
your mom is the right triangles
Are some isosceles triangles equilateral triangles?
All isosceles triangles are not equilateral triangles
Some equilateral triangles are not isosceles?
All isosceles triangles are not equilateral triangles
Is a right angle an isosceles angle?
Isosceles triangles are triangles in which 2 angles and 2 sides are congruent, or equal. There is nothing called an isosceles angle. Some isosceles triangles are right triangles. This is where the non-congruent triangle is a right triangle, and the other two are 45 degrees each. This type of triangle is called a 45-45-90 triangle. Two sides are multiples of one and the third is a multiple of root-2. In other words yes it is.
What are some different triangles?
You have acute, right, and obtuse triangles when referring to the measure of the largest angle, and you have equilateral, isosceles, and scalene triangles when referring to the congruency of the triangle's sides.
Can some isosceles triangles also be obtuse?
The third angle can be obtuse, eg 40, 40 and 100
Are some right triangles are isosceles triangles?
Yes.
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 some triangles have one obtuse angle and two acute angles?
Yes. For example, an isosceles triangle with one angle of 120 degrees, and two of 30 degrees.
Does a musical triangle have to be equilateral?
No, some early musical triangles were isosceles triangles, most modern musical triangles are equilateral.
Do isosceles triangles have all equal sides?
Some people classify isosceles triangles as having at least two equal sides, while other say that they must have exactly two equal sides. So, depending on your definition, some isosceles triangles may have all equal sides, but equilateral triangles always have three equal sides.
Is a triangle a symmetric shape yes or no?
Some triangles are symmetric, while others are not. All equilateral and isosceles triangles are symmetric.all triangles are symmetric.
Can an isoceles triangle be equilateral?
-- Some mathematicians define an 'isosceles' triangle as one with at least twoequal sides. They would say that equilateral triangles are isosceles.-- Other mathematicians define an 'isosceles' triangle as one with exactly twoequal sides. They would say that equilateral triangles are not isosceles.
