Interior angles in a triangle add up to 180˚. Triangles close triangleA polygon with three straight sides. have three sides, therefore they have three angles. Interior angles in a triangle sum to a ...

Angles are often described using three letters. Angles can be drawn and measured using a protractor. Finding angles between lines Complementary angles form a right angle. Supplementary angles form a ...

to find the values of WX Y and Z when given a included triangle of another triangle there's one thing that you need to know that is the interior angle Sum Theorem basically saying that all the angles ...