1.(Mathematics)geometrya three-sided polygon that can be classified by angle, as in an acute triangle, or by side, as in an equilateral triangle. Sum of interior angles: 180°; area: base × height 2.any object shaped like a triangle ...
no sides are equal D. one side is longer than the others 相关知识点: 试题来源: 解析 A。在几何中,证明一个三角形是等边三角形需要展示所有边都相等,选项 A 正确。选项 B 是等腰三角形的特征;选项 C 不是任何特殊三角形的特征;选项 D 也不符合等边三角形的定义。反馈 收藏 ...
A. necessary but not sufficient B. sufficient but not necessary C. both necessary and sufficient D. neither necessary nor sufficient 相关知识点: 试题来源: 解析 C。本题考查几何证明中的充分必要条件关系。一个三角形有三条相等的边必然是等边三角形,这是既充分又必要的条件。A 选项“必要但不充分”不...
Learn the definition of a triangle in geometry. Learn about the parts of triangles and different types of triangles. Discover how to find the area...
A Theorem in the Geometry of the Triangledoi:10.2307/2973140J. W. ClawsonMathematical Association of AmericaAmerican Mathematical Monthly
Maple Exploration of Hilbert Geometry in a Triangle Electronic Journal of Mathematics & TechnologyMauricio, HerreraRubén, PreissGonzalo, Riera
D. The sum of the interior angles of a triangle is E. qual to two right angles. 相关知识点: 试题来源: 解析 D。“180 degrees”等于“two right angles(两个直角)”。选项 A 三角形外角和是 360 度;选项 B 四边形内角和是 360 度;选项 C 五边形内角和不是 180 度。反馈 收藏 ...
Triangles are one of the most fundamental shapes in geometry. A triangle is a polygon with three sides and three angles. The sum of the interior angles of a triangle is always 180 degrees. There are different types of triangles based on their sides and angles. Triangles can be classified as...
A triangle is a polygon which has three sides and three angles. Visit BYJU'S to learn about the different types of triangles, properties, area and perimeter formulas with more solved examples.
Suppose there is a right triangle whose gou (shorter leg) is 5 bu, and gu (longer leg) is 12 bu. What is the width of the inscribed square? 【Solution】 Let be the shorter leg (勾 gou), be the longer leg (股 gu), and