Inscribed angle "V" and whose sides pass through points "A" and "B". Draw line "OA". Angle "BOA" is a central angle; call it "θ". Lines "OV" and "OA" are both radii of the circle, so they have equal lengths. Therefore, triangle "VOA" is isosceles, so angle "BVA" (the inscribed angle) and angle "VAO" are equal; let each of them be denoted as "ψ". Angles "BOA" and "AOV" are supplementary. They add up to 180°, since line "VB" passing through "O" is a straight line. Therefore, angle "AOV" measures 180° − "θ". It is known that the three angles of a triangle add
Mathematics education in Australia degrees. The course is divided into four (4) semesters. The areas learned are in the following: Semester 1 (Year 11/Form 5): Semester 2 (Year 11/Form 5): Semester 3 (Year 12/Form 6): Semester 4 (Year 12/Form 6): Since 2010, the Year 11 and 12 mathematics courses of study were: Mathematics courses 1A/1B and 1C/1D are non-ATAR subjects. However, new WACE mathematics courses are to be introduced for Year 11 students in 2015 and Year 12 students in 2016 in order to align with the Australian curriculum in Western Australia. The new WACE mathematics courses consist of four units. Each unit is