## New Plane and Solid Geometry |

### From inside the book

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... triangles , do not draw them right , isosceles , or equilateral , unless the exercise calls for a right , isosceles , or

... triangles , do not draw them right , isosceles , or equilateral , unless the exercise calls for a right , isosceles , or

**equilateral triangle**; in exercises relating to quadrilaterals , do not draw them with two sides equal or par ... Page 5

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**triangle**as a portion of a plane bounded by three straight lines ; as ABC . We call the lines AB , BC , and CA the sides of the**triangle**; and ...**Isosceles Equilateral**A right**triangle**is a**triangle**which has a right INTRODUCTORY 5. Page 17

... triangles ABD and BCD , side BD and angles ABD and ADB are equal respectively to side BD and angles CBD and CDB , what other sides A and angles of the triangles are equal ? PROP . IV . THEOREM B 50. In an

... triangles ABD and BCD , side BD and angles ABD and ADB are equal respectively to side BD and angles CBD and CDB , what other sides A and angles of the triangles are equal ? PROP . IV . THEOREM B 50. In an

**isosceles triangle**, the angles ... Page 22

Webster Wells. PROP . IX . THEOREM 61. Two right

Webster Wells. PROP . IX . THEOREM 61. Two right

**triangles**are equal ...**isosceles**, and Z AZ D ' . ( $ 20 ) [ In an**isosceles**A , the opposite the ...**triangle**is greater than the difference of the other two sides . Draw A ABC ... Page 31

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**isosceles triangle**, unless otherwise specified , the side which is not one of the equal sides is taken as the base . When any side has been taken as the base , we call the opposite angle the vertical angle , and its vertex the ...### Other editions - View all

### Common terms and phrases

ABC and A'B'C adjacent angles altitude angle formed angles are equal apothem arc BC base and altitude bisector bisects centre chord circle circumference circumscribed coincide construct Converse of Prop diagonals diameter diedral angle distance Draw line equal parts occur equal respectively equally distant equilateral triangle exterior angle faces frustum Given line given point homologous sides hypotenuse intersecting isosceles trapezoid isosceles triangle LAOB lateral area lateral edges line drawn lines be drawn measured by arc middle point number of sides oblique lines opposite parallel parallelogram parallelopiped perimeter perpendicular plane MN polyedron prism Proof proportional Prove pyramid quadrilateral radii radius rectangle regular polygon rhombus right angles right triangle secant segments slant height spherical polygon spherical triangle square straight line surface tangent tetraedron THEOREM trapezoid triedral vertex vertices volume