Geometry ToolkitCambridge IGCSE Maths: Flashcards
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Question
Define 'perpendicular'.
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- Define 'perpendicular'.
- Two lines that meet at exactly 90°.
- Define 'similar' shapes.
- Shapes with the same angles and proportional (but not necessarily equal) side lengths.
- Define 'congruent' shapes.
- Shapes that are identical in both shape and size.
- What is an obtuse angle?
- An angle between 90° and 180°.
- What is a reflex angle?
- An angle between 180° and 360°.
- Name the property that defines an isosceles triangle.
- Two equal sides and two equal base angles.
- What is a rhombus?
- A quadrilateral with four equal sides and equal opposite angles.
- What is a trapezium?
- A quadrilateral with exactly one pair of parallel sides.
- How many sides does a hexagon have?
- 6 sides.
- How many sides does a decagon have?
- 10 sides.
- What is a frustum?
- The solid left when the top of a cone or pyramid is cut off by a plane parallel to its base.
- Define 'chord' of a circle.
- A straight line joining two points on the circumference.
- Define 'sector' of a circle.
- A region bounded by two radii and an arc.
- What tool is used to draw and measure angles accurately?
- A protractor.
- What is a 'scale factor'?
- The number relating the lengths of corresponding sides between similar shapes.