1)

a) Yes; right-angle

b) No; not right-angle

c) Yes; right-angle

d) No; not right-angle

e) Yes; right-angle

f) Yes; right-angle

a) Yes; right-angle

b) No; not right-angle

c) Yes; right-angle

d) No; not right-angle

e) Yes; right-angle

f) Yes; right-angle

**Working**

**Questions**

You may use a calculator for the questions in this quiz.

1) Are the following triangles right-angle triangles?