Find Angles! Once you have completed the basic questions from Stage 1 to Stage 4, try to solve the challenging questions on the Final Stage! If you can't solve a question, you can check the hint of the question or ask the answer to your friends via Twitter. 'Angles' contains following contents: --- -The sum of the Angles of a triangle -Exterior angle of a triangle -Isosceles triangle -Right-angled triangle -Vertical angle -Corresponding angle -Alternate angle -Parallelogram -T