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## Geometry part 2

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**3600**There are 3600 in every circle. This initial definition allows for further angles to be identified**1800**900 450 These are some more common angles**Supplementary Angles (SAT)**Supplementary Angles must add to 180O A + B = 180O A B**Complementary Angles (CAT)**Complementary Angles must add to 90O A + B = 90O A B**Opposite Angle Theorem (OAT)**If 2 lines intersect, then the opposite angles are equal. O X X O**Sum of the Angles of a Triangle Theorem (SATT)**The sum of the Interior Angles of a Triangle is 180O a + b + c = 180O a b c**Isosceles Triangle Theorem(ITT)**The base angles of an Isosceles Triangle are equal X Y X**Equilateral Triangle Theorem(ETT)**X X = 60O X X**Exterior Interior (EI)**An exterior angle equals the sum of the opposite two interior angles. D = A + B A B D**Exterior Angles (EA)**The exterior angles of a triangle and a quadrilateral sum to 360O A A + B + C = 360O B C**Sum of the Angles Of a Quadrilateral Theorem (SAQT)**The sum of the Interior Angles of a Quadrilateral is 360O a + b + c + d = 360O a d b c**Exterior Angles**The exterior angles of a triangle and a quadrilateral sum to 360O A + B + C + D = 360O D A C B**From the green workbook**Page 214 Page 217 Page 220 Page 224**HomeFun YA!!!**Page 348 1-4 Page 352 1b, c, d, f, h Page 365 1a,c 2a,b