It's one of those things most people remember from their school days.
The angles in a triangle always add up to 180藲.
And a right-angled triangle always has one angle that is 90掳, so the other two angles will have a total of 90掳.
Is it all coming back? Put your knowledge and deduction skills to good use in this tricky challenge all about triangles and their angles. You won't need a protractor - just your own reasoning skills.
This quiz was published in February 2023
Maths challenge: Can you handle these big numbers?
Have some fun thinking about huge numbers with this quiz, in which the questions get a little bit harder as you go along.
Maths problems of the week
Are you ready to test your maths skills?
Maths problems of the week
Test your knowledge of fractions, shapes and division.
