← Unit 3: Measurement
Mathematics · Grade 9
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Area of Plane Figures and Surfaces — Key Terms
Match each term to its definition.
Area
— match —
The amount of surface a flat shape covers, measured in square units.
A pie-slice region of a circle bounded by two radii and an arc.
A flat pattern that folds up to form a solid, showing all its faces.
The total area of all the outer faces of a solid.
Sector
— match —
The amount of surface a flat shape covers, measured in square units.
A pie-slice region of a circle bounded by two radii and an arc.
A flat pattern that folds up to form a solid, showing all its faces.
The total area of all the outer faces of a solid.
Net
— match —
The amount of surface a flat shape covers, measured in square units.
A pie-slice region of a circle bounded by two radii and an arc.
A flat pattern that folds up to form a solid, showing all its faces.
The total area of all the outer faces of a solid.
Surface area
— match —
The amount of surface a flat shape covers, measured in square units.
A pie-slice region of a circle bounded by two radii and an arc.
A flat pattern that folds up to form a solid, showing all its faces.
The total area of all the outer faces of a solid.
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