Math 9: Tangents to a Circle

Tópico:Circuferência, Geometria, Reta Tangente ou Tangente

Note that line segment AB is tangent to the circle at point D. Move Point E around the circle to create a chord that passes through the centre of the circle. What do you notice about the angle?

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זוית היקפית וזוית מרכזית
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