The angles of a(三角形) add up to 180 degrees. 相关知识点: 试题来源: 解析 triangle 本题考查名词。1. 分析句意:三角形内角和为180度。2. 确定答案。根据句意及中文提示“三角形”,且空格前有不定冠词a,判定本空填写可数名词单数形式triangle。
互补角(complementary angles)的定义是两个角的度数之和为90°。以下是对每个选项的逐一分析:- **选项A**:角度和为180°。这是补角(supplementary angles)的定义,而非互补角,因此错误。- **选项B**:角度和为90°。此描述完全符合互补角的定义,正确。- **选项C**:角度相等。这描述的是全等角或对等角,与互...
Hence, the angles on a straight line add up to 180∘180∘. Question 1:Look at the figure below:___ and ___ are acute angles.Solution: To identify if an angle is acute, we place a ruler on one of the lines of an angle.If the second line of the angle lies within the ruler...
Whentwolinesmeetatapointanangleisformed.A B C Anangleisameasureoftherotationofoneofthelinesegmentstotheother.Welabelanglesusingcapitalletters.Thisanglecanbedescribedas 5of69 ABCorABCor B.©BoardworksLtd2004 Conventions,definitionsandderivedproperties Aconventionisanagreedwayofdescribingasituation.Forexample,...
Two or more angles on a straight line add up to 180°. In the diagram above, the circle to the left is split into three sectors the angles of the green and white sectors are both 90°, adding up to 180°. The figure to the right shows that angles a and b also add up to 180°...
(C)Angles that add up to 360°(D)Angles that are opposite ofeach other when lines intersect and are equal. 相关知识点: 试题来源: 解析 D 垂直角(Vertical angles)的定义是当两条直线相交时,位于相对位置的两个角,且它们的度数相等。 - **选项A**(和为180°):描述的是补角(Supplementary angl...
1 ___ angles of any triangle always add up to 180 degrees. If three The three Three of Three are 2【题目】angles of any triangle always add up to180 degrees.If threeT he threeT hree ofT hree are 3【题目】angles of any triangle always add up to180 degrees.A. If three B. Th...
Angles in a straight line add up to 180 degrees. Vertical angles are always equal. Complementary angles add up to 90 degrees. Supplementary angles add up to 180 degrees.Solved Examples on Types of Angles1. Classify given angles as acute, obtuse, right, reflex, or straight.i...
Areanglesbetween180°and360° NamingAngles -Wheretheraysmeet(vertex)givesthemiddleletteroftheanglename e.g.Namethefollowingangles a)C b)X B ABCorCBA XYZorZYX AMeasuringAngles e.g.Measurethefollowingangles Y Z Makesureyoureadfromthescalestartingfrom0ontheline!a)b)X C BABC=43° Y Z A ...
(Or = 180 – (90+50)). 3. Angle QPR = 360 – (120 + 130) = 360 – 250 = . Angles at a point add up 360. 4. (a) = vertically opposite angles are equal. (b) = 180 – 67 = Angles in a straight line add up to 180. 5. (a) Angle SRQ = 180÷ 3 = 60. ...