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Transcript
Objective Be able to use angle facts to solve problems in geometry. FACT A • Angles around a point add up to 360º FACT B • Angles on a straight line add up to 180º FACT C • Angles in a triangle add up to 180º a c a + b + c = 180º b FACT D • The base angles in an isosceles triangle are equal. FACT E • Each angle in an equilateral triangle is 60º 60º 60º 60º FACT F • Vertically opposite angles are equal. a b b a FACT G • Alternate angles are equal a a FACT G • Corresponding Angles are equal b b FACT H • Allied angles add up to 180º. y x x + y = 180º
