## The Elements of Plane and Solid Geometry: With Chapters on Mensuration and Modern Geometry |

### Inni boken

Side 30

Hence ,

Hence ,

**all the angles**at**the**intersection of**two**straight lines , are equal to four**right angles**. Corollary**2**. ... CEB - CEB**Let the**side BC of**the triangle**ABC be produced to D ; then will A CD be greater**than**either ABC or BAC . Side 31

**Any two angles**of a**triangle**are**together less than two right angles**. but ( I. 15 ) ,**Let**ABC be a**triangle**;**any two**of its**angles**are**together less than two right angles**. Produce BC to D. Then , because A CD is**the**exterior**angle**of ... Side 37

**The**interior**angles**BGH , GHD are**together**equal to**two right angles**. ... KL and CD will meet on**that**side of EF on which**the**sum of**the**interior**angles**is**less than two right angles**.**Let**KGH , GHC be**less than two right angles**. Side 49

**The**square on a side of a**triangle**subtending an acute**angle**, is**less than the**squares on**the**other sides .**Let**BAC be an acute**angle**, then BCAC + AB2 . Make AD AC , and at**right angles**to AB ( I. 8 ) . G Hence**the**proposition may 19. Side 58

If

If

**the**square described on one side of a**triangle**be equal to**the**sum of**the**squares of**the**other**two**sides ,**the angle**contained by these sides is a**right angle**. = For if it were obtuse ,**the**square of**the**opposite side would be ...### Hva folk mener - Skriv en omtale

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### Andre utgaver - Vis alle

The Elements of Plane and Solid Geometry: With Chapters on Mensuration and ... Isaac Sharpless Uten tilgangsbegrensning - 1879 |

The Elements of Plane and Solid Geometry: With Chapters on Mensuration and ... Isaac Sharpless Ingen forhåndsvisning tilgjengelig - 2016 |

The Elements of Plane and Solid Geometry: With Chapters on Mensuration and ... Isaac Sharpless Ingen forhåndsvisning tilgjengelig - 2017 |

### Vanlige uttrykk og setninger

ABCD altitude angle ABC axis base bisect called centre chord circle circumference common cone construct Corollary cylinder describe diagonals diameter difference distance divided draw drawn ends equal equal angles equilateral extremities faces feet figure formed four frustum given greater half Hence inscribed interior angles intersection join length less Let ABC mean meet middle Multiply opposite parallel parallelogram parallelopiped pass perimeter perpendicular plane pole polygon portion prism Prop proportional Proposition proved pyramid quadrilateral quantities radii radius ratio reason rectangle contained regular polygon respectively right angles segment sides similar solid sphere spherical square straight line surface symmetrical Take tangent Theorem Theorem.-If third touch triangle triangle ABC true VIII volume whole

### Populære avsnitt

Side 54 - If a straight line be divided into any two parts, the square of the whole line is equal to the squares of the two parts, together with twice the rectangle contained by the parts.

Side 75 - The angles in the same segment of a circle are equal to one another.

Side 79 - If a straight line touch a circle, and from the point of contact a...

Side 126 - Wherefore, in equal circles &c. QED PROPOSITION B. THEOREM If the vertical angle of a triangle be bisected by a straight line which likewise cuts the base, the rectangle contained by the sides of the triangle is equal to the...

Side 15 - AXIOMS. 1. Things which are equal to the same thing are equal to one another. 2. If equals be added to equals the wholes are equal. 3. If equals be taken from equals the remainders are equal.

Side 108 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.

Side 62 - If a straight line be divided into two equal, and also into two unequal parts ; the squares on the two unequal parts are together double of the square on half the line, and of the square on the line between the points of section.

Side 160 - A be a solid angle contained by any number of plane angles BAC, CAD, DAE, EAF, FAB: these together are less than four right angles. Let the planes...

Side 15 - LET it be granted that a straight line may be drawn from any one point to any other point. 2. That a terminated straight line may be produced to any length in a straight line.

Side 125 - If from the vertical angle of a triangle a straight line be drawn perpendicular to the base, the rectangle contained by the sides of the triangle is equal to the rectangle contained by the perpendicular and the diameter of the circle described about the...