## Concrete Geometry: Introductory to Formal Plane Geometry |

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### Other editions - View all

Concrete Geometry: Introductory to Formal Plane Geometry - Scholar's Choice ... Theophilus Nelson No preview available - 2015 |

Concrete Geometry. Introductory to Formal Plane Geometry Theophilus Nelson No preview available - 2017 |

Concrete Geometry: Introductory to Formal Plane Geometry Theophilus Nelson No preview available - 2019 |

### Common terms and phrases

ABCD adjacent angles altitude angle ABC angle equal angle formed answer base bisect called centre chord circle circumference with centre construct an angle contains corresponding sides diagonals diameter difference distance divide Draw a circumference Draw a line Draw a triangle drawn equal equilateral triangle EXERCISES exterior extremities figure four Give the reason given half hexagon hypotenuse inches inferred intercepted interior angles intersecting kind length letter mark Mark the point Measure median meet meters method Name number of degrees octagon opposite parallelogram perimeter perpendicular perpendicular bisectors placing plane polygon principle protractor quadrilateral radii radius radius equal ratio rectangle regard regular hexagon regular polygon relation respectively rhombus right angle right triangle secant similar polygons square Statement straight line surface Take tangent third three angles trapezoid triangle ABC units vertex vertices Write a definition

### Popular passages

Page 4 - Measures of Length. 10 millimeters (mm.) 1 centimeter (cm.) 10 centimeters 1 decimeter (dm.) 10 decimeters 1 meter (m.) 10 meters 1 dekameter (Dm.) 10 dekameters 1 hectometer (Hm.) 10 hectometers 1 kilometer (Km.) 10 kilometers 1 myriameter (Mm.) 1181.

Page 14 - PERIPHERY of a circle is its entire bounding line ; or it is a curved line, all points of which are equally distant from a point within called the centre.

Page 116 - In any proportion, the product of the means is equal to the product of the extremes.

Page 98 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards — 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.

Page 53 - If two triangles have two sides and the included angle of one equal respectively to two sides and the included angle of the other, the triangles are equal.

Page 14 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.

Page 17 - A circle is a plane figure bounded by a line, every point of which is equally distant from a point within, called the center.

Page 116 - C to D. The quantities which are compared together are called the terms of the proportion. The first and last terms are called the two extremes, and the second and third terms, the two means.

Page 33 - O as a center and any convenient radius (about 2 inches) draw an arc intersecting the sides of the angle at E and F. With E and F as centers and a radius of l£ or 1| inches, describe short arcs intersecting at I.

Page 93 - How many degrees has each angle of a regular pentagon? Of a regular hexagon? Of a regular octagon?