Try to find the angle of the various plane figures ! once you have completed the basic questions from stage 1 to stage 4, try to find the challenging questions on the final stage ! if you can't find a question, you can check the hint of the question or ask the answer to your friends via facebook or 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 -the sum of the angles of a quadrilateral -the sum of the angles of a polygon -inscribed angles -alternate segment theorem ---
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