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No. An isoscles triangle is any triangle with two equal sides ... which means it's
going to have two equal angles, but they don't have to be any particular number.
The only requirement on the angles in the triangle is that all three of them must
add up to 180 degrees.
45-45-90 is an isosceles right triangle, and there are an infinite number of other
isosceles triangles that have no 90-degree angle in them.
You could have a very tall isosceles triangle sitting on a very skinny base, where
the two angles on the base are both 89 degrees, and the one way up at the top
is 2 degrees.
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An equilateral triangle is always an isosceles triangle?
Yes.
Is a triangle with two congruent angles always a 45-45-90 triangle?
No because an isosceles triangle has various two congruent angles. A 45-45-90 triangle is technically an isosceles triangle.
Can the altitude from the vertex angle of an isosceles triangle be the median?
If the triangle is really isosceles, and it's not lying on one of the equal sides, then the altitude is always a median.
Is an isosceles right triangle always a 45 45 90 triangle?
Not always because it could be a 50 50 80 triangle
Is equilateral triangle always an isosceles triangle?
If an isosceles triangle is defined as one which has two sides (or angles) equal, then YES. But if an isosceles triangle is defined as one which has two sides (or angles) equal, and the third side (angle) different, then NO.
A triangle that has angles that measures 454590 degree is a?
A 45-45-90degree triangle is classified as an isosceles triangle.
Is right triangles with 2 congruent legs is always a 454590 triangle?
Yes if you mean in degrees
Is a right triangle always an isosceles triangle?
No. An isosceles right triangle is a special case. There are many right triangles which are not isosceles.
Is an isosceles triangle always an acute triangle?
no
Is a scalene always isosceles?
No. A scalene triangle is never isosceles. An isosceles triangle has two equal sides. A scalene triangle has none.
Is an isosceles triangle always obtuse?
No not always
Can you show me a triangle with only one line of symmetry?
An Isosceles triangle has at least one line of symmetry but if it has more than one line of symmetry it can be an Equilateral triangle as well as a Isosceles Triangle. So a triangle with one line of symmetry is always Isosceles and If it has more than one it is always an Equilateral triangle as well as an Isosceles triangle. Example of an Isosceles triangle:
An equilateral triangle is always an isosceles triangle?
Yes.
If a triangle is obtuse then it is always isosceles?
No
A triangle with two congruent sides is always?
An isosceles triangle.
Is an isosceles triangle sometimes an equilateral triangle?
sometimes, but not always
Does an isosceles triangle have a right angle?
An isosceles triangle has two equal sides and two equal angles. A right triangle is any triangle with one angle that is a right angle. A right triangle could also be an isosceles triangle, but an isosceles triangle will not always have a right angle.
