all the lines on a triangle are equal and the opposite sides are parallel
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They are formed by three straight lines.
Interior angles add up to 180 degrees.
Exterior angles add up to 360 degrees.
An equilateral triangle- a triangle with 3 equal sides, so the triangle would have 3 congruent angles as well.A trick to remember this: the word equal is sort of in the word equilateral.
No. A pentagon has 5 sides and a triangle has 3 sides.
3 angles in a triangle
An EQUILATERAL Triangle. Two lines of symmetry is ISOSCELES Triangle No lines of symmetyry is SCALENE Triangle.
Area of Equilateral Triangle A= S2 * (Root 3)/4, where A= Area of the triangle S= Side of the triangle.