 Angles KS2

Unit 1 | Algebra

Unit 2 |Graphs

Page 1 | Straight line graphs

Unit 3 |Geometry and Measure

Page 2 | Symmetry

Page 3 | Coordinates

Page 4 | Perimeter, Area, Volume

Page 5 | Circle geometry

Page 6 | Measurement

Page 7 | Trigonometry

Page 8 | Pythagoras

Page 9 | Angles

Page 10 | Shapes

Page 11| Time

Page 12 | Locus

Unit 4 | Numbers

Page 1 | Speed, Distance and time

Page 2 | Rounding and estimating

Page 3 | Ratio and proportion

Page 4 | Factors, Multiples and primes

Page 5 | Powers and roots

Page 6 | Decimals

Page 7 | Positive and negative numbers

Page 8 | Basic operations

Page 9 | Fractions

Page 10 | Percentages

Unit 5 | Statistics and Probability

Page 1 | Sampling data (MA)

Page 2 | Recording and representing data

Page 3 | Mean median range and mode

Page 4 | Standard deviation

Unit 4 | Calculus

Angles

An angle measures how far something has turned and it is measured in degrees, which are symbolised with a little o sign after the number. We can measure angles using an object called a protractor.

A full turn (coming back to the where you started from) is 360o is 90o

A right angle is 90o and is one quarter of a full turn.  An angle which is less than a right angle (less than 90) is called an acute angle. An angle which is more than a right angle but less than a straight line (more than 90 but less than 180o) is called an obtuse angle. An angle which is greater than 180is called a reflex angle. All of the angles inside a triangle will always add up to 180o.   1) Complete the table 2) Look at the angle. Tick the statements that are correct. The angle is acute .

The angle is greater than 90°.

The angle is reflex .

The angle is obtuse.

3) Here is a mosaic a)  Work out the size of angle is?

b)  What type of triangle is in the mosaic?

Isosceles     equilateral     right angle       scalene

4) Here is a triangle. Without measuring the angle, How can we tell that angle x is 18°.Explain your answer . 5)  #### Previous      1 2 3 4 5 6       Next

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