PROPERTIES OF TRIANGLES (D)Online version Taking into account the properties of triangles write in front of each sentence (T) if it is true or (F) if it is false. by Nazaré Nunes 1 The sum of the measures of the interior angles of a triangle is 180°. a T b F 2 Every triangle has three interior angles and three exterior angles. a T b F 3 In every triangle, the greater the side is opposed by a smaller angle. a T b F 4 The measure of one of the sides is greater than the sum of the other two, and less than the difference. a T b F 5 The triangle ABC, has an angle of 100 ° and another angle of 36 °, knowing that this is the missing angle is 54 °. a T b F 6 The sum of the measures of the exterior angles is 180 °. a T b F 7 If two sides of a triangle are congruent, then the opposite angles to those sides are congruent. This property is for isosceles triangles. a T b F 8 Every exterior angle is obtuse. a T b F 9 If the measure of the angle between the two congruent sides of a triangle is 120 °, the measure of each of the other angles is 30 °. a T b F 10 It is possible to construct a triangle whose sides are 7 cm, 5 cm, and 3 cm. a T b F
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