PLANE AND SOLID GEOMETRY

An annulus is a plane figure which is composed of two concentric circles. The area of the annulus can be calculated by getting the difference between the area of the larger circle and the area of the smaller circle. Also, its area can be calculated by removing the hole. This method is called

• law of extremities

• law of reduction

• law of deduction

• sharp theorem

Each of the faces of a regular hexahedron is a

• square

• triangle

• rectangle

• hexagon

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It is a polyhedron of which two faces are equal polygons in parallel planes and the other faces are parallelograms.

• tetrahedron

• prism

• frustum

• prismatoid

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The apothem of a polygon is​ of its inscribed circle.

• radius

• circumference

• diameter

• length

Each angle of regular dodecagon is equal to

• 135

• 150

• 125

• 105

The area bounded by two concentric circles is called

• ring

• disk

• annulus

• sector

One-fourth of a great circle is called

• cone

• sector

• quadrant

• arc

Points that lie on the same plane are called

• coplanar

• parallel

• collinear

• oblique

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The volume of a circular cylinder is equal to the product of its base and altitude.

• axiom

• postulate

• theorem

• corollary

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The study of properties of figures in three dimensions.

• Physics

• Plane Trigonometry

• Solid Geometry

• Trigonometry

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