Relier Pairs PROPERTIES OF THE TRIANGLEVersion en ligne PROPERTIES OF THE TRIANGLE par Alfonso Estrada Padilla Oficial 1 What is the name given to a triangle whose three angles are less than 90°? 2 Any exterior angle of a triangle is equal to the sum of its interior opposite angles 3 A triangle that has three sides of different lengths. 4 What is the sum of angles property of a triangle called? 5 A triangle that has three sides of the same length. 6 A triangle that has two sides of the same length and the third side of different length. This is called the exterior angle property of a triangle. Isosceles triangle. A scalene triangle. Equilateral triangle. Acute-angled triangle. The sum of all internal angles of a triangle is always equal to 180°
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