GCSE Secondary Maths Age 13-17 - Algebra: Cosine Rule - Explained

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Mathematics
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10th - 12th Grade
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Hard
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7 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the relationship between AB and CD in the quadrilateral ABCD?
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Explain how angle ABC relates to angle BCD.
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
What must be proven about the lines AC and BD?
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
Describe the process of separating the triangles in the proof.
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the significance of BC being common in both triangles?
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
How does proving the triangles are congruent lead to the conclusion that AC is equal to BD?
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
List the conditions of congruency mentioned in the proof.
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