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Y6 Summer Block 1 TS3 Vertically opposite angles

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L.O: To measure, calculate and classify angles

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L.O: To measure, calculate and classify angles

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a) 138º

b) 28º

c) 146º

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1) B because the total for these angles is 182° which is greater than the measurement for a straight line which is 180°.

2) D because the angles around a point must total 360°. Even though they don't look like the same sized angles, the diagram is not drawn to scale so we cannot use this as a reliable measure.

3) A because it is the only combination that creates a perfect straight line. The other combinations, therefore, must be greater or smaller than 180°.

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L.O: To calculatevertically opposite angles

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L.O: To calculatevertically opposite angles

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L.O: To calculate angles within a triangle

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L.O: To calculate angles within a triangle

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Y6 Summer Block 1 TS1 Measure and classify angles

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23º

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1) D because the two lines do not intersect, they are adjacent.

2) B because these are the only angles positioned at the vertices of straight intersecting lines.

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a) 80°

b) 50°

c) 65°

d) 80°

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1) B because angles in a triangle total 180 which means the angle adjacent to x is 48. Angles on a straight line total 180 which means angle x is 132.

2) B because without the dotted line, this is just a quadrilateral. Both A and C's answers are convincing but the trapezium is one shape, not a triangle and rectangle combined.

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Y6 Summer Block 1 TS4 Angles in a triangle