All triangles have 3 sides and 3 interior angles that add up to 180 degrees.
Equilateral triangles have 3 congruent sides.
Isosceles triangles have 2 congruent sides.
A right angle triangle can have 2 congruent sides if its interior angles are 90, 45, 45 degrees.
A scalene or an obtuse triangle has no congruent sides.
right triangle. obtuse triangle. acute triangle
The 2 triangles can be of any type (e.g isosceles, equilateral, etc.), only they must be exactly the same if they are congruent, i.e one triangle must be an exact copy of the other one.
Equilateral, isosceles and scalene.
30"x60" and 45"
Angle in triangle abc measure 27, 73 and 80, what kind of triangle is abc
An equilateral triangle has six symmetries, and an isosceles triangle has two. An isosceles triangle has a single axis of symmetry, the perpendicular bisector of the non-congruent side. This is a reflection symmetry. An equilateral triangle has rotational symmetry as well as reflection symmetry. It is invariant under rotations by 120 degrees.
An isosceles triangle has 3 sides 2 of which are equal in lengths An equilateral triangle has 3 sides all of which are equal in lengths
Angles: acute angle, obtuse angle, right angle Triangles: isosoles triangle, scalene triangle, equadrital triangle, right triangle, acute triangle, obtuse triangle
Finite, countably infinite and uncountably infinite.
All triangles have exactly three sides. If the number of sides were anything other than three there would not be a triangle - of any kind.
the three kinds of triangle are iscoceles scalene and etc:
Acute Triangle - All of the angles are under 90 degrees. Right Triangle - One angle is 90 degrees Obtuse Triangle - A triangle that has one angle greater than 90 degrees