A quadrilateral is called a concave quadrilateral if at least one diagonal, i.e. the line segment joining the vertices is not a part of the same region of the quadrilateral.Convex quadrilaterals: In convex quadrilaterals, each interior angle is less than 180°. A quadrilateral is convex if ...
Quadrilateral definition A quadrilateral is a plane figure made with four line segments closing in a space. Quadrilaterals can be convex or concave and simple or complex.The easiest, fastest way to learn about quadrilaterals is to build one yourself. Find four straight objects to use as line ...
That means, this quadrilateral is either a rhombus or a square. The difference between the two is that a square has four (align*)90°(align*) angles and congruent diagonals. To find the diagonal of (align*)AC(align*) : (align*)(AC &=√((1 - (-1))^2 + (0 - 0)^2) AC &...
If the three angles of a quadrilateral are 120°, 130°, 10° then what is the fourth angle ?43.如果四边形的三个角是120°, 130°, 10°,那么第四个角度是什么?(a) 30°(b) 100°(c) 40°(d) 90°Answer:(b)(b) 相关知识点: ...
Which statement about parallelograms is always true? (1) The diagonals are congruent. (2) The diagonals bisect each other. (3) The diagonals are perpendicular. (4) The diagonals bisect their respective angles. Do diagonals of a parallelogram bisect angles? What quadrilateral has only two right...
Quadrilateral | Definition & Examples from Chapter 8 / Lesson 12 265K Learn about quadrilaterals, which are four-sided polygons. Discover quadrilateral figure properties, different types of quadrilaterals, and the etymology of the word quadrilateral. Related...
Statement 2 : Ifg(a−x)=−g(a+x)∀x∈R,theng(x)is symmetrical about the point(a,0) View Solution Statement 1 is True: Statement 2 is True; Statement 2 is a correct explanation for statement 1 Statement 1 is true, Statement 2 is true;2 Statement 2 not a correct explanation ...
C下面的格子四边形围成的面积是多少?将点分配给四个顶点中的每一个,并用鞋带定理求出面积.让左下角(0,0),计数框,点(4,0),(0,5),(3,4),和(10,10).运用鞋带定理,Area=12∣∣∣∣∣∣4005341010∣∣∣∣∣∣=12|(20+30)−(15+40+40)|=12|50−95|=2212.故选C.把皮克定理应用到图上,你...
In a quadrilateral, the sum of three angles is 270 degrees. What is the measure of the fourth angle? A. 75 degrees B. 90 degrees C. 105 degrees D. 120 degrees 相关知识点: 试题来源: 解析 B。四边形内角和为 360 度,已知三个角的和为 270 度,那么第四个角为 360 - 270 = 90 度。
The vertices of a quadrilateral ABCD are A(1, -3), B(4, -3), C(4, -5), and D(-1, -5). The vertices of another quadrilateral EFCD are E(1, -7), F(4, -7), C(4, -5), and D(-1, -5). Which conclusion is true about the quadrilat...