In plane geometry, the sum of the internal angles of any triangle has always equal to 180 degrees. 答案:D 分析:be equal to是正确的用法。Has改为is。 参考译文:在平面几何中,任意一个三角形的内角和总是180度。 难度:1 相关知识点: 试题来源: 解析 Geographers were once concerned largely with...
The consecutive interior angle theorem states that if a transversal line intersects a pair of parallel lines, then the sum of the consecutive interior angles is equal to 180 degrees. Using the sample illustration to determine the location of the angles, one can see that: {eq}\angle 3 {/eq...
no, vertical angles can never be adjacent. adjacent angles are the ones next to each other while vertical angles are opposite from each other. q4 are adjacent angles equal to 180 degrees? adjacent angles, that are supplementary to each other, always add up to 180 degrees. if the angles ...
A half-revolution, also known as a straight angle, is 180 degrees. A quarter revolution, or right angle, is 90. In text, angles can also be indicated by the symbol . Vertical Angles When two lines or line segments intersect, two pairs of congruent (equal) angles are created. The ...
The segments are known as sides, and the intersection of these are the vertices. The sum of the internal angles is equal to 180 degrees. There are several types of triangles; among them, we have equilateral, scalene, and isosceles. Isosceles triangles have two sides of equal length....
Angles are geometric figures formed by two rays, meeting at a common endpoint. Angles are measured in degrees. The symbol of angle is ∠. It can be measured using a protractor, easily.
A pentagon does not have 5 right angles. The sum of the 5 angles in a pentagon is 540 degrees. If each of the angles is equal, each angle will be 540/5 = 108 degrees.Pentagon Angles The word polygon comes from a Greek word meaning many angles. To put it another way, a polygon ...
A. 80 degrees B. 100 degrees C. 120 degrees D. 130 degrees 相关知识点: 试题来源: 解析 A。本题考查等腰三角形性质。等腰三角形两底角相等,三角形内角和为 180 度。两底角都是 50 度,那么顶角就是 180-50×2=80 度。选项 B100 度错误,选项 C120 度错误,选项 D130 度错误。反馈...
Are vertical angles 90 degrees or 180 degrees? Vertical angles are angles that are opposite each other when two lines intersect each other. The two pairs of opposite angles are equal to each other. The two pairs of neighboring angles are supplementary, meaning they add up to 180 degrees. ...
The sum of all the angles of a triangle is 180 degrees. 三角形内角总和为180度。 《柯林斯高阶英汉双解学习词典》 6、 The wings were at right angles to the line of flight. 机翼与航线成直角。 《柯林斯高阶英汉双解学习词典》 7、 The root of the University of East Anglia dispute is, ...