Acute angles. Right angle and straight angle; Revolution in a clock; Acute, Obtuse, Reflex Angles Measuring angles; Measuring angles using protractor; Perpendicular Lines; Classifying triangles; Quadrilaterals; Polygons; 3 Dimensional Shapes At 5 o'clockLet one angle=xSec. Therefore, 34 minutes x 6 degrees =204 degrees. The second hand and the hour hand show an acute angle. This problem is taken from the UKMT Mathematical Challenges . If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas. An Obtuse Angle is just the opposite of an Acute Angle. and ‘facts’ about angles around a point, on a straight line, inside and outside a triangle and other polygons and between a transversal and parallel lines. A clock takes the shape of a circle, which is composed of 360 degrees. That is clear. Here student identifies type of angle formed by clock hands. What is the obtuse angle between the hands of a clock at 6 minutes past 8 o'clock? The hour hand is three-fourths of the way from the "4" to the "5; that is, While practicing this, children will improve their concept on different types of angles (acute, right, obtuse, straight, reflex). Call the "12" point on the clock the zero-degree point. Obtuse angles are angles that have a measure of more than 90° but less than 180°. On the little ends of the hands there are smaller angles. There are 12 numbers on a clock that represent the hours. The minute hand is at 48 minutes. But each minute on the clock is 360 /60 =6 degrees . The clock hands show a obtuse angle. With this in mind, we can say that each number represents an angle. Then they have to choose the appropriate rule to get the right answer to each calculation. For example, a capital letter "A" has an acute angle. The hour hand has moved: 48 / 12 = 4 minutes after 2, which is 14 minutes from 12 O'clock. Explanation: . Acute angles are angles that have a measure of less than 90°. At 4:45, the minute hand is at the "9" - that is, at the mark. For example, a clock showing 5 o'clock has an obtuse angle. Students often approach the topic of angles by memorising lots of vocabulary (acute, obtuse, right angle, etc.) Angular speed of hour hand is 0.5°/minute. So, 48 - 14 =34 minutes, the angle between the two hands of the clock. Relative to hour hand , the angular speed of minute hand is 5.5 ° per minute. An example of an acute angle is below: Obtuse angles. In the following image, AB and BC intersect to form an angle that is greater than 90° and less than 180°. The angle measure between any two consecutive numbers on a clock is .. The measure of the angle between each number is given by . Angle =360-xHalf of clock is =180°And is distributed in 30°eachTherefore 5×30=150°Second angle = 360-150=210°Mark ia as brainlie… Positive Angles: An angle that is rotated Counter Clock-wise or Anti clockwise is a positive angle. Angular speed of minute hand is 6 ° / minute. 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