Second Chance! Review your working and see if you can correct your mistakes
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Bookwork code: 1E
a) Write an expression for a in terms of a and b.
State the angle fact you used to do this.
b) Using your answer to part a), prove that y = a + b.
State the angle fact you used to do this.
x
a
b
Angle facts
Vertically opposite angles are equal
Corresponding angles are equal
Angles in a triangle sum to 180°
Alternate angles are equal
Angles which make a straight line sum to 180°
Angles around a point sum to 360°