1) The sum of the angles inside a triangle is a) 90 degrees b) 180 degrees c) 360 degrees 2) A triangle with no equal sides is called a/an a) scalene triangle b) isosceles triangle c) equilateral triangle 3) Each angle in an equilateral triangle measures a) 30 degrees b) 60 degrees c) 180 degrees 4) The angles in a triangle are 67 degrees, 71 degrees and 42 degrees. What type of triangle is it? a) right-angled b) obtuse-angled c) acute-angled 5) What is the size of the angle marked C degrees? a) 65 degrees b) 90 degrees c) 115 degrees 6) Two angles in a triangle are 30 degrees and 45 degrees. What type of triangle is it? a) acute-angled b) obtuse-angled c) right-angled 7) What are the measures of the angles in a right-angled isosceles triangle? a) 90 degrees, 30 degrees, 60 degrees b) 50 degrees, 80 degrees, 50 degrees c) 90 degrees, 45 degrees, 45 degrees

Triangles

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