Impossible triangles

Maths

When constructing a triangle, should you erase the construction lines at the end?

Which triangle is impossible to construct?

What equipment would you use to construct a 9cm, 7cm, 18cm triangle correctly?

The base is 8cm. 4cm should have been the base.

How do I know from the construction that this is an impossible triangle?

If you know the length of the sides of a triangle, you can _______ it using a pair of ______.

This circle is drawn on a centimetre square grid. State the radius and diameter.

No, they are not both correct. Only B is correct because she mentioned the shortest angle first then measured the rest.

No, they are not both correct. Only student A is correct because the base is 3cm.

Yes, they are both correct because both of the triangles are identical (congruent) but they are orientated differently.

Two students were asked to construct a triangle with side lengths 3 cm , 2 cm and 4 cm.  Are they both correct?