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![]() As explains, plane geometry is the study of flat shapes like lines, circles, and triangles. ![]() Below is a collection of 232 calculators separated by type of geometry and skill level. It can be difficult to sift through them all. If a point lies outside a line, then exactly one plane contains both the line and the point (Theorem 2). There are tons of geometry calculators available online. If two lines intersect, then exactly one plane contains both lines (Theorem 3). If two planes intersect, then their intersection is a line (Postulate 6).Ī line contains at least two points (Postulate 1). If two points lie in a plane, then the line joining them lies in that plane (Postulate 5). Through any two points, there is exactly one line (Postulate 3). Through any three noncollinear points, there is exactly one plane (Postulate 4). Theorem 3: If two lines intersect, then exactly one plane contains both lines.Įxample 1: State the postulate or theorem you would use to justify the statement made about each figure.įigure 1 Illustrations of Postulates 1–6 and Theorems 1–3. ![]()
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