A triangle, as its name suggests, has 3 corners. No more, no less. A triangle itself is 2-D, meaning it is flat. A pyramid would be 3-D. It also has 3 edges. Triangles can be of different types: equilateral - all sides of equal length isoceles - exactly two sides of equal length and the other of a different length scalene - no sides of equal length.
One more because an equilateral triangle has 3 equal sides whereas a right isosceles triangle has only 2 equal sides.
An isosceles triangle has two (or more) sides of equal length, while a scalene triangle has no correlation between side lengths/angle size.
All triangles have 3 sides but an isosceles triangle has 2 equal sides and an equilateral triangle has 3 equal sides.
Using the traditional definitions, a triangle that has two equal sides (and angles) is an isosceles triangle and one with three equal sides (and angles) is an equilateral triangle. However, some mathematicians define an isosceles triangle as any triangle having at least two equal sides, which is what you are describing.
A triangle, as its name suggests, has 3 corners. No more, no less. A triangle itself is 2-D, meaning it is flat. A pyramid would be 3-D. It also has 3 edges. Triangles can be of different types: equilateral - all sides of equal length isoceles - exactly two sides of equal length and the other of a different length scalene - no sides of equal length.
One more because an equilateral triangle has 3 equal sides whereas a right isosceles triangle has only 2 equal sides.
One more because an equilateral triangle has 3 equal sides whereas a right isosceles triangle has only 2 equal sides.
If if is a triangle, it is isosceles. There's nothing more that I can tell you based on your question.
An isosceles triangle has two (or more) sides of equal length, while a scalene triangle has no correlation between side lengths/angle size.
All triangles have 3 sides but an isosceles triangle has 2 equal sides and an equilateral triangle has 3 equal sides.
Using the traditional definitions, a triangle that has two equal sides (and angles) is an isosceles triangle and one with three equal sides (and angles) is an equilateral triangle. However, some mathematicians define an isosceles triangle as any triangle having at least two equal sides, which is what you are describing.
It depends what type of triangle it is. If it is a scalene triangle, ie. a triangle with three different length sides and angles, then it won't have any lines of symmetry. If it's an iscosoles triangle, ie. a triangle with two sides and angles of equal length, it has one line of symmetry, but if it's an equalateral triangle, ie. a triangle with all sides and angles the same, then it has three lines of symmetry.
No.
A triangle with 2 equal sides is known as an isosceles triangle. Sometimes it is defined as a triangle with 2 or more equal sides, which therefore includes equilateral triangles as a type of isosceles.
if you mean ALL sides equal then no, because for a triangle to have ALL equal sides all angles must be equal (60 degrees), and an obtuse triangle must have an angle with 91 or more degrees. but if you mean TWO sides equal then yes. for example, a triangle with angles 40, 40 & 100 degrees would have two equal sides.
An isosceles (2 equal sides), equilateral (3).