Recognising and Ordering Angles Success Criteria To identify

Recognising and Ordering Angles Success Criteria To identify and order 3 acute, right angle and obtuse angles To identify and order 4 acute, right angle and obtuse angles To calculate the missing journey of the arc to 90º To calculate the missing journey of the arc to 180º 3

Recognising and Ordering Angles Watch the following Youtube clips https: //safe. You. Tube. net/w/TLb. M https: //safe. You. Tube. net/w/e. Mb. M https: //safe. You. Tube. net/w/p. Mb. M

Link the definitions on the left with their definitions. Straight angle Arc Parallel lines Intersection Perpendicular Complementary angles Supplementary angles Right angles An angle of 90°, as in a corner of a square, or formed by dividing a circle into quarters. An angle changes the direction to point the opposite way. It measures 180⁰ Either of two angles whose sum is 180 A part of the angle i. e. 25⁰ is part of 90⁰ so the other part is 65⁰ Either of two angles whose sum is 90° Lines on a plane that never meet. They are always the same distance apart. At an angle of 90° to a given line, A point at which two or more things cross over.

Link the definitions on the left with their definitions. Straight angle Arc Parallel lines Intersection Perpendicular Complementary angles Supplementary angles Right angles An angle of 90°, as in a corner of a square, or formed by dividing a circle into quarters. An angle changes the direction to point the opposite way. It measures 180⁰ Either of two angles whose sum is 180⁰ A part of the angle i. e. 25⁰ is part of 90⁰ so the other part is 65⁰ Either of two angles whose sum is 90° Lines on a plane that never meet. They are always the same distance apart. At an angle of 90° to a given line. A point at which two or more things cross over.

Lets review the different types of angles. A obtuse angle is greater than 90º and less than 180º A right angle is exactly 90º A right angle is smaller than 90º An angle that moves 180º

b, c, a Put these angles in order from smallest to the biggest. b, a, c

Cc, b, a, b Put these angles in order from smallest to the biggest. b, a, c, b

Clockwise and Anti-clockwise watch these videos https: //safe. You. Tube. net/w/3 Mb. M https: //safe. You. Tube. net/w/CMb. M

Lets take an obtuse angle 80º 120º – 40º = 80º Clockwise direction means the If I rotate the angle by 40º 80 Now is between we subtract 0 and 40º 90 so from this arc will move inmake the right clockwise, will it is an direction acute 120º angle. it an acute angle?

Lets take the same angle– how do we make this a straight angle and which direction would the arc move ? 60º A straight angle is 180º So we subtract 120º from 180º which leaves 60º So it moves in an anti -clockwise direction by 60º