Shape and Space 1
2 marks · NormalDraw a triangle which has exactly one line of symmetry. Name this type of triangle.
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Isosceles triangle (with 1 line of symmetry)
Must show: closed 3-sided figure, two equal sides, one line of symmetry
Also accept: Isosceles triangle; isosceles
Common mistakes: equilateral triangle (which has 3 lines)
Show mark scheme and worked solution
Marking points
B1 · 1 mark · Draws a triangle with exactly one line of symmetry (isosceles triangle).
B2 · 1 mark · Names the triangle as isosceles.
Worked solution
This is an isosceles triangle—it has exactly one line of symmetry.