Types Of Triangles
This lesson covers:
- The features of the 4 types of triangle: equilateral, isosceles, right-angled, and scalene.
Which of the following is an isosceles triangle?
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Which of the following is a scalene triangle?
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Which of the following is a right-angled triangle?
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Which of the following is an equilateral triangle?
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Which of the following is true of isosceles triangles (assuming they are not also right-angled)?
None of their sides are the same length
2 of their sides are the same length
All 3 sides are the same length
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Which of the following is true of right-angled triangles (assuming they are not also isosceles)?
They have 3 lines of symmetry
They have 1 line of symmetry
They have 0 lines of symmetry
They have 2 lines of symmetry
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What is the order of rotational symmetry of an equilateral triangle?
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The diagram shows an equilateral triangle. How many degrees is each of the angles?
90°
180°
60°
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Which of the following is true of scalene triangles?
(Select all that apply)
Their sides are all the same length
Their sides are all different lengths
They have 1 line of symmetry
They have 0 lines of symmetry
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Sketch out a right-angled isosceles triangle on some paper.
(press 'Continue' when you're ready to check your answer)
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