An isosceles triangle and an equilateral triangle
might be an equilateral triangle. isosceles triangle or a right angled triangle :)
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In two dimensions, lines can be parallel, angles cannot. So no plane shape has parallel angles.
It is an indication of an error, or the fact that the triangle is not in the Euclidean plane but on a convex surface.
Triangle Plane Square
A triangle is a plane figure so it has two dimensions: length and breadth.
In plane geometry at least two angles must be acute in a triangle.
heptagon and an equilateral triangle
Plane and Triangle
An isosceles triangle and an equilateral triangle
limiting and descriptive
might be an equilateral triangle. isosceles triangle or a right angled triangle :)
No, not in general. Only a right triangle has two sides which are perpendicular.
An edge is the set of points where two (or more) planes meet. Since a triangle must be in just one plane, it cannot have any edges. It has one face, which is part of the plane containing the triangle.
Two classifications for books are fiction and nonfiction.
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