直角三角形构造示例
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①本范例演示如何通过 GeoGebra 构造一个直角三角形,其中两条直角边长度分别为 20 厘米和 21 厘米;②涉及的核心数学概念包括直角三角形、边长计算、坐标几何;③作图要点:使用 Segment、Point、Vector、Sequence 等命令,结合 Measurement2、value2、Measurement1 等对象进行精确测量和动态展示;④适合初中及以上学生学习几何作图和解析几何知识。
GeoGebra 命令及参数
LaTeX("\text{Set up an equation by using the Pythagorean Theorem.}") → text1LaTeX("\text{Because the piece of tile is a triangle with two perpendicular sides, it is in the shape of a right triangle. This means that }") → text2LaTeX("\text{is the length of the hypotenuse, can be used to find the length of the remaining side.}") → text4LaTeX("\text{Determine the length of the remaining side.}") → text6LaTeX("\text{Equation from the previous step}") → text9LaTeX("\text{Take the positive square root of both sides of}") → text15LaTeX("\text{the equation using a calculator.}") → text16LaTeX("\text{Simplify the square root.}") → text18Segment(B, (x(B), 0)) → bSegment((0, 2), A) → aPoint(a) → QVector(Q, B) → uSequence(Segment[A + (a, 0), A + (a, (-0.6))], a, 0, 10) → list1Sequence(Segment[A + (a - 0.5, 0), A + (a - 0.5, (-0.4))], a, 1, 10) → list2Segment((0, 0), C) → cVector(D, E) → vSegment(E, (x(E), 0)) → dLaTeX((((("\text{Using the Pythagorean Theorem, the equation is \textcolor{#000099}{" * value1) * "^{2}+") * value2) * "^{2}=c^{2}}.}")) → text5LaTeX((("\text{A side length cannot be negative, so consider only the positive square root value of \textcolor{#000099}{" * total) * "}. Therefore, the length of the}")) → text19LaTeX((((("\text{To determine the length of the remaining side, solve the equation \textcolor{#000099}{" * value1) * "^{2}+") * value2) * "^{2}=c^{2}} for \textcolor{#000099}{c}.}")) → text7LaTeX("\text{{the Pythagorean Theorem, which is \textcolor{#000099}{a^{2}+b^{2}=c^{2}}, where \textcolor{#000099}{a} and \textcolor{#000099}{b} are the lengths of the legs of a right triangle and \textcolor{#000099}{c}}") → text3LaTeX("\text{ \mathbf{Congruent} figures are congruent if they have the same shape, size, lines, and }") → text34LaTeX((((("\text{\textcolor{#000099}{" * value1) * "^{2}+") * value2) * "^{2}}}")) → text8LaTeX((((("\text{\textcolor{#000099}{" * squareval1) * "+") * squareval2) * "}}")) → text10LaTeX((("\text{\textcolor{#000099}{" * total) * "}}")) → text12LaTeX("\text{\textcolor{#000099}{=\;c^{2}}}") → text38LaTeX("\text{\textcolor{#000099}{=\;c^{2}}}") → text37LaTeX("\text{\textcolor{#000099}{=\;c^{2}}}") → text39LaTeX("\text{\textcolor{#000099}{\;=\sqrt{c^{2}}}") → text41LaTeX((("\text{\textcolor{#000099}{" * result) * "}}")) → text17LaTeX("\text{\textcolor{#000099}{=\;c}") → text42LaTeX("\text{\mathbf{Congruent \;triangles} triangles having the same angle measures and side lengths.}") → text36LaTeX("\text{angles; the symbol for representing congruency between figures is ≅.}") → text35LaTeX((("\text{\textcolor{#000099}{\sqrt{" * total) * "}}}")) → text14LaTeX("\text{The two perpendicular sides form a right angle, so they are the legs of the triangle. The hypotenuse is the side opposite}") → newt43LaTeX((((("\text{the right angle. Therefore, given \textcolor{#000099}{a^{2}+b^{2}=c^{2},} the variables \textcolor{#000099}{a} and \textcolor{#000099}{b} represent the leg lengths (\textcolor{#000099}{" * value1) * "} cm and \textcolor{#000099}{") * value2) * "} cm),}")) → newt43_1LaTeX("\text{and \textcolor{#000099}{c} represents the hypotenuse.}") → newt43_2LaTeX("\text{A carpenter cuts a piece of tile into a triangle. Two of the sides are perpendicular. The two perpendicular sides}") → Question1LaTeX((((("\text{measure \textcolor{#000099}{" * value1) * "} centimeters and \textcolor{#000099}{") * value2) * "} centimeters. What is the length of the remaining side of the piece of tile?}")) → Question2LaTeX((((("\text{Square \textcolor{#000099}{" * value1) * "} and \textcolor{#000099}{") * value2) * "}.}")) → text11LaTeX("\text{Add.}") → text13LaTeX((("\text{remaining side of the piece of tile is \textcolor{#000099}{ " * result) * "} centimeters.}")) → text20
AI 绘图提示语参考
绘制一个直角三角形,两条直角边分别为20厘米和21厘米。首先画一条20厘米的线段AB,然后从B点画一条垂直于AB的21厘米线段BC,最后连接A和C点形成斜边AC。测量并计算斜边AC的长度。
以上提示语为根据原始绘图命令整理而来,仅供参考。