Properties of trianglesVersion en ligne Properties of triangles par danny alejandra sierra jaimes 1 A triangle that has two sides of the same length and the third side of a different length is an isosceles triangle. Sí No 2 A triangle that has all three angles less than 90° is an acute angle triangle. Sí No 3 A triangle that has all three sides of the same length is an equilateral triangle. Sí No 4 The sum of all interior angles of any triangle is equal to 180° Sí No
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