Drawing Similar Triangles

Maths

Constructing triangles and quadrilaterals

Complete the sentence: We can draw different triangles that have the same ______ angles using a ruler and a ________.

What is the length of the missing side, k, on the larger triangle?

Yasmin and Xiavier are talking about constructing triangles. Yasmin says you need 2 sides lengths to be able to construct a triangle. Xiavier says you need a protractor to construct a triangle. Who is correct?

What equipment would you use to construct 95°, 6cm, 55° triangle correctly?

Both angles have the same interior angles of ____, _____ and _______

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?

Drawing Similar Triangles

Lesson outcome