## Elementary geometry |

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Side 9

When the arms of an

When the arms of an

**angle**are in the same straight line , the conjugate**angles**... placed between letters at points on each of its arms , as**BAC**, or CAB . Side 18

A right - angled triangle is that which has one of its

A right - angled triangle is that which has one of its

**angles**a right**angle**. ... Part . En . Let the two triangles**BAC**, 18 [ Book I. ELEMENTARY GEOMETRY . Side 19

BA = ED , AC = DF , and the included

BA = ED , AC = DF , and the included

**angle BAC**= the included angle EDF ; it is required to prove that the triangles are equal in all respects , viz . the ... Side 20

The angles at the base of an isosceles triangle are equal to one another * . Part . ... Let AX be the bisector of the

The angles at the base of an isosceles triangle are equal to one another * . Part . ... Let AX be the bisector of the

**angle BAC**, ( Ax . 4. ) ... Side 23

Firstly to prove that ACD is greater than

Firstly to prove that ACD is greater than

**BAC**. ... and therefore the**angle**E AB = the**angle**ECF . But the**angle**ECD is greater than ECF ; therefore the ...### Hva folk mener - Skriv en omtale

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ABCD adjacent angle ABC angle APB angle BAC base bisect bisector Book called centre chord circle circumference coincide College common Constr construct converse Crown 8vo diagonals diameter difference distance divided draw drawn Edition ELEMENTARY equal angles Euclid Examples exterior angle extremities fall figure Find follows four Geometry given angle given point given straight line greater half Hence Illustrations included inscribed interior intersect isosceles triangle Join length less Let ABC line drawn locus magnitudes measure meet middle point minor arc opposite sides parallel parallelogram pass perpendicular placed polygon PROBLEM produced Professor Proof proportional quadrilateral radius ratio rectangle contained rectilineal figure regular required to prove respectively right angles School segment Shew sides similar Similarly square supplementary tangent THEOREM third touch triangle ABC unequal

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