1) A triangle in which all sides are the same length. a) isosceles triangle b) equilateral triangle c) right triangle d) acute triangle 2) A triangle in which two sides are the same length. a) equilateral triangle b) right triangle c) isosceles triangle d) acute triangle 3) A triangle in which all sides have different lengths. a) scalene triangle b) equilateral triangle c) isosceles triangle d) obtuse triangle 4) A triangle in which all angles measure less than 90 degrees. a) acute triangle b) obtuse triangle c) right triangle d) scalene triangle 5) A triangle in which one angle measures greater than 90 degrees. a) right triangle b) acute c) equilateral Triangle d) obtuse triangle e) scalene triangle 6) A triangle in which one angle measures 90 degrees. a) obtuse triangle b) right triangle c) scalene triangle d) acute triangle 7) Triangles can be classified by a) both sides and angles b) sides c) angles d) none of the above 8) Which photo shows an equilateral triangle? a) b) c) d) 9) Which photo shows an isosceles triangle? a) b) c) d) none of the above 10) Which photo shows a scalene triangle? a) b) c) d) none of the above 11) Which photo shows a right triangle? a) b) c) d) 12) Which photo shows an obtuse triangle? a) b) c) d) 13) Which photo shows an acute triangle? a) b) c) d)

Types of Triangles

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