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2024年2月19日 · 喺DSE考核範圍裡面，大家需要識得圓形、切線、半徑、直徑、圓內接三角形或四邊形、弦弧線之間嘅關係。. AfterSchool 為你整合出最詳細嘅Basic Properties of Circles，幫助你輕鬆重溫！. 想學埋其他形狀嘅性質及證明？. 即撳： 【圖形性質 Reason 列表】Geometry prove reason ...
本課件展示了切線上的兩個弦切角與對應的兩個弧的大小關係，以說明弧長在弦切角與內錯弓形圓周角的關係中擔當了中介角色，加深學生對定理的理解。 15 圓內接四邊形對角 (與弦切角的關係) | Opposite Angles of Cyclic Quadrilaterals (with tangent-chord angles) 一般課本會將圓內接四邊形對角轉化為一對總和是360度的圓心角，從而証明圓內接四邊形對角之和是180度。 本課件在學生學習內錯弓形的圓周角後，嘗試用另一角度理解圓內接四邊形對角之和。 16 三個圓定理的關係 | Relationships among 3 Circle Theorems.
Some of the important properties of the circle are as follows: The circles are said to be congruent if they have equal radii. The diameter of a circle is the longest chord of a circle. Equal chords of a circle subtend equal angles at the centre. The radius drawn perpendicular to the chord bisects the chord.
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- If the given circles have equal radii then the circles are congruent.
- Every circle is similar to each other irrespective of its radii.
- Following are the properties of the tangent to the circle: 1) Radius of the circle is perpendicular to point of contact between the tangent and th...
- A circle is a geometrical figure formed by the locus of points which are equidistant to a common point called the centre of the circle, and the con...
2023年3月15日 · 「等弦對等弦心距定理」是指對於一個圓，如果有兩條等長的弦，則它們到圓心的距離也相等。 具體而言，假設圓心為O，圓上有兩條等長的弦AB和CD，且它們的交點為E。 則OE和OD的長度相等，OE和OA的長度相等。 這個定理可以用幾何或向量法來證明。 其中一種證明方法如下： 連接OE、OD、OA三條線段。 由於弦AB和CD相等，所以AE＝BE，CE＝DE，且AE＝CE。
DSE數學 – 必修部分【目錄】. 喺學 圓的基本性質 嘅時候，我哋會見到一D喺初中時比較少見嘅詞語。. 為方便大家日後嘅學習，喺度先講解吓依D詞語。. 當中包括: 弧線 (arc)、弦線 (chord)、弓形 (segment)、圓心角 (angle at centre)、圓周角 (angle at circumference)、圓內接 ...
Here are additional basic properties that are useful to know: Equal arcs subtend equal angles and vice versa. Equal angles stand on equal chords and vice versa. Equal chords are equidistance from the center and vice versa. The perpendicular bisector of a chord passes through the center of the circle.
Here is a list of properties of a circle: A circle is a closed 2D shape that has one curved face. Two circles can be called congruent if they have the same radius. Equal chords are always equidistant from the center of the circle. The perpendicular bisector of a chord passes through the center of the circle.
