Form 1 Geometry - Revision
Presentation
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Mathematics
•
7th - 11th Grade
•
Hard
Min Tan
Used 13+ times
FREE Resource
18 Slides • 9 Questions
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Form 1 Geometry - Revision
Chap 10 - Basic Geometrial Concepts
Chap 11 - Angles
Chap 12 - Intersecting Lines and Parellel Lines
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10.3 Solid Figures
Vertices 顶点
Side / Edge 边
Face 面
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10.5 Line symmetry 线对称
Axis of symmetry 对称轴
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Hour-hand & minute-hand questions (for next 2 slides)
5 mins = 30 degree = 1 "big block"
1 min = 6 degree = 1 "small block"
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Eg 1. Small angle between hour-hand and minute-hand at 4pm.
4 "big block" = 4 x 30°= 120°
0 "small block" = 0 x 6° = 0°
TOTAL = 120° + 0° = 120°
try it yourself: 7pm and 10pm
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Eg 2. Small angle between hour-hand and minute-hand at 8:30pm.
2 "big block" = 2 x 30°= 60°
2.5 "small block" = 2.5 x 6° = 15°
TOTAL = 60° + 15° = 75°
try it yourself: 5:30pm, 6:15pm
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Extra questions from just now
Form 1 Geometry - Revision
Chap 10 - Basic Geometrial Concepts
Chap 11 - Angles
Chap 12 - Intersecting Lines and Parellel Lines
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