# Math project

More Options: Make a Folding Card

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• elha2 yalla ya hassan, ehna 3andena math project!﻿
• Ahh sah. yalahwy ﻿
• Yalla.. bas heya eh aslan﻿
• en e7na nekteb el rules kolaha be taree2a creative ﻿
• Theorem 11.1: ﻿if a line is tangent to a circle, then it is perpendicular to the radius drawn at the point of tangency
• ﻿
• Theorem 11.3:
• If two segments from the same point outside a circle are tangent to it they are congruent.﻿
• Math project﻿
• Theorem 11.2: in a plane, if a line is perpendicular to a radius of a circle at its endpoint on the circle , then the line is tangent to the circle ﻿
• T 11.3: The measure of an arc formed by two adjacent arcs is the sum of the measures of the two arcs.﻿
• Theorem 11.4﻿: If a diameter of a circle is perpendicular to a chord, then the diameter bisects the chord and its arc.
• 11.3, arc length: In a circle, the ratio of the length of a given arc to the circumference ﻿is equal to the ratio of the measure of the arc to 360o
• Examples:﻿
• ﻿
• Theorem11.5: if one chord is perpendicular bisector of another chord, then the first chord is a diameter
• Theorem 11.6: if two minor arcs are congruent, then their corresponding chords are congruent ﻿
• Theorem 11.6: if two chords are congruent, then their corresponding minor arcs are congruent ﻿
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