Books Books PROBLEM. To inscribe a circle in a given triangle. Let ABC be the given triangle : it is required to inscribe a circle in the triangle ABC. Mathematics, mechanics, heat - Page 70
by American School (Chicago, Ill.) - 1903 ## Elements of Plane Geometry

Franklin Ibach - Geometry - 1882 - 208 pages
...any point without a given circle, two equal tangents to the circle can be drawn. PROBLEM XVII. 235. To inscribe a circle in a given triangle. Let ABC be the given A. Bisect the Z.» ABC and CAB. The bisectors meet in some point, as 0. From 0 draw OF, OD, and OE,... ## Essentials of Geometry

Alfred Hix Welsh - Geometry - 1883 - 326 pages
...AD is tangent to circle C (Gh. IV, Th. XI) ; similarly, AE is a second tangent. QK f. PROBLEM XXIII. To inscribe a circle in a given triangle. Let ABC be the given triangle. Bisect any two angles, as A and B (Prob. VI), producing their bisectors till they meet in O; fnom O to the sides draw... ## The Elements of Euclid for the Use of Schools and Colleges: Comprising the ...

Euclid, Isaac Todhunter - Euclid's Elements - 1883 - 426 pages
...equiangular to the triangle DEF, and it is described about thedrcle ABC. QEF, PEOPOSITION 4. PROBLEM. To inscribe a circle in a given triangle. Let ABC be the given triangle : it is required to inscribe a circle in the triangle ABC. Bisect the angles ABC, ACB, by the straight... ## Chauvenet's Treatise on Elementary Geometry

William Chauvenet, William Elwood Byerly - Geometry - 1887 - 331 pages
...circle whose radius is the sum of the radii of the given circles. PROPOSITION XXXII.—PROBLEM. 80. To inscribe a circle in a given triangle. Let ABC...the given triangle. Bisect any two of its angles, as B and (7, by straight lines meeting in 0. From the point 0 let fall perpendiculars OD, OE, OF, upon... ## Chauvenet's Treatise on Elementary Geometry

William Chauvenet - Geometry - 1887 - 346 pages
...circle whoso radius is the sum of the radii of the given circles. PROPOSITION XXXII.— PROBLEM. 80. To inscribe a circle in a given triangle. Let ABC be the given triangle. Bisect any two of it* angles, as B and C, by straight lines meeting in O. From the point O let fall perpendiculars OD,... ## The Harpur Euclid: An Edition of Euclid's Elements

Edward Mann Langley, W. Seys Phillips - 1890 - 538 pages
...given circle describe a quadrilateral equiangular to a given quadrilateral. PROPOSITION 4. PROBLEM. To inscribe a circle in a given triangle. Let ABC be the given A ; it is reqd. to inscribe a 0 in it. Bisect the LS ABC, BCA by the st. lines BO, CO. From O draw... ## Elementary Geometry

William Chauvenet - 1893 - 340 pages
...radius is the sum of the radii of the given circles. •••.. JK PROPOSITION XXXII.—PROBLEM. 80. To inscribe a circle in a given triangle. Let ABC...the given triangle. Bisect any two of its angles, as B and C. by straight lines meeting in O. From the point O let fall perpendiculars OD, OE, OF, upon... ## The Elements of Geometry

Webster Wells - Geometry - 1894 - 394 pages
...by construction, AB = CD and AD = BC, ABCD is a parallelogram. (§ 108.) PROPOSITION- XL. PROBLEM. To inscribe a circle in a given triangle. Let ABC be the given triangle. J To inscribe a circle in ABC. Draw AD and BE bisecting the angles A and B, respectively (§ 207);... ## Plane and Solid Geometry

James Howard Gore - Geometry - 1898 - 232 pages
...required. EXERCISES. I. Construct a square upon a given straight line. PROPOSITION XXIV. PROBLEM. 193. To inscribe a circle in a given triangle. Let ABC be the given triangle. To inscribe a circle in ABC. It is known (from 96) that the point in which the bisectors of the angles... 