The sum of the interior angles of any triangle

12 questions

1. The value of a is ___.
2. Match the type of triangle and the description.
3. Which angles are always equal to the angle marked a?
4. The value of the angle marked r° is ___°.
5. The value of the angle marked x° is ___°.
6. The value of the angle marked m° is ___°.
7. Select the statements that can correctly complete the following sentence. The angle marked g ...
8. The ___ angles of any triangle sums to 180°.
9. This diagram _________ that the angles in any triangle sum to 180°.
10. Which of the following could not be the angles in a triangle?
11. Match each mathematical statement to the correct reasoning in this proof.
12. The size of the angle marked h° is ___°.

License: OGL