L I To calculate missing angles on a
- Slides: 13
L. I. To calculate missing angles on a straight line and around a point Angles along a straight line
L. I. To calculate missing angles on a straight line and around a point Both images show two angles along a straight line. In both images, the two angles must add up to 180 degrees. The left image shows two right angles – they are the same size. The right image shows an acute angle and an obtuse angle – they are different sizes.
L. I. To calculate missing angles on a straight line and around a point
L. I. To calculate missing angles on a straight line and around a point What is the size of the missing angle? Remember that both of them need to add up to 180 degrees! 104 + 76 =180 OR 180 – 104 = 76 The missing angle is 76 degrees!
L. I. To calculate missing angles on a straight line and around a point
L. I. To calculate missing angles on a straight line and around a point
L. I. To calculate missing angles on a straight line and around a point 1. X = 38 degrees 2. Louise is facing south east 3. A + B + C = 180 degrees They are all acute angles
L. I. To calculate missing angles on a straight line and around a point Angles around a point
L. I. To calculate missing angles on a straight line and around a point Both images two lines intersecting (crossing) through a middle point. Both images show four angles which have to add up to 360 degrees. One image shows four right angles; the other shows a pair of acute angles and a pair of obtuse angles.
L. I. To calculate missing angles on a straight line and around a point Opposite angles around a point with intersecting lines are always the same size!
L. I. To calculate missing angles on a straight line and around a point What is the size of the missing angle? Remember that the total of all four angles must add up to 360 degrees! 90 x 2 = 180 + 146 = 326 360 – 326 = 34 The missing angle is 34 degrees.
L. I. To calculate missing angles on a straight line and around a point Have a go at the worksheet. Then:
L. I. To calculate missing angles on a straight line and around a point 4. Add up the three angles we know the value of and then subtract from 360 OR count on until we reach 360. 5. 270 degrees 6. True!