Valeda Clarabelle Ang's answer to SC's Primary 5 Maths Singapore question.
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You are right that h=20
They question says that it's parallelogram, so the opposite sides are parallel.
Look out for the two letters, the inverted F (highlighted in red), and the Z (highlighted in green).
When it's a parallelogram, the inverted F rule tells u that that the corresponding angles are equal ie it's 64° in this case.
That means to get the bottom angle, it's 64-44 =20°.
The Z rule tells you that alternate angles are equal ie h = 20
Search up "angle rules" on google to see all the rules
They question says that it's parallelogram, so the opposite sides are parallel.
Look out for the two letters, the inverted F (highlighted in red), and the Z (highlighted in green).
When it's a parallelogram, the inverted F rule tells u that that the corresponding angles are equal ie it's 64° in this case.
That means to get the bottom angle, it's 64-44 =20°.
The Z rule tells you that alternate angles are equal ie h = 20
Search up "angle rules" on google to see all the rules
Date Posted:
1 year ago
Thank you so much!
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