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angles test - Coggle Diagram
angles test
simple geometry
vertically opposite angles are equal
angles on a point add up to 360
angles on a line add up to 180
parallel lines
alternate angles are equal
interior angles add up to 180
Corresponding angles are equal
shapes
tri angles
isosceles
equilateral
180
quadrilaterals
kite
trapezium
isosceles trapezium
360
parallelogram
rhombus
circle geometry
no tangents
angle at centre is 2x angle at circumference
angles in same segment
angles in a semi circle
opposite angles ina cyclic quadrilateral add up to 180
tangents
alternate segment theorem
equal tangent
radius is perpendicular tangent