Primary 6 · Angles · Question type 8.1
Name the angle being found and write the property used in brackets beside each line.
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Primary 6, on the MOE Primary Mathematics syllabus.
The lesson · 2 minutes 7 seconds
Watch: 62° and 71° on a straight line, and the one left over
Another worked example
AOB and COD are straight lines crossing at the point O. Angle AOC is 4 times angle AOD. Find angle BOC.
The working · Four lines
Written out in full, the way it should appear on paper.
The answer is 36°.
Practise · Modelled on top school exam questions
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Try it yourself
Use the right angle and the straight line to find the missing angle.
XOY is a straight line. Ray OU stands on it with angle XOU a right angle, and angle UOV = 34°. Find angle VOY.
Ans: 56°
The practice plan adds more questions and saved progress.
Next, find unknown angles in an isosceles triangle. Angles in an Isosceles Triangle →