Essentials of Solid Geometry |
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Αποτελέσματα 1 - 5 από τα 42.
Σελίδα 13
To prove that a line or group of lines is a locus we must show that ( a ) every point
on the line or lines satisfies the given condition , and ( 6 ) every point which
satisfies the given condition lies on the line or lines . 2. The locus of points at a
given ...
To prove that a line or group of lines is a locus we must show that ( a ) every point
on the line or lines satisfies the given condition , and ( 6 ) every point which
satisfies the given condition lies on the line or lines . 2. The locus of points at a
given ...
Σελίδα 19
Obviously we cannot draw a figure which shall represent such a surface; and
hence when we wish to show a plane, we may represent it by a thin rectangular
solid seen obliquely, as in any of the three ways shown below. Since the student
has ...
Obviously we cannot draw a figure which shall represent such a surface; and
hence when we wish to show a plane, we may represent it by a thin rectangular
solid seen obliquely, as in any of the three ways shown below. Since the student
has ...
Σελίδα 38
By proving that A'B'BA and A'C'CA are 5 ( $ 10 , 6 ) , show that B'BCC ' is a 0 , and
hence that BC = B'C ' ( $ 10 , 3 ) . Then A ABC is congruent to A A'B'C ' . $ 7,5 ..
ZANZA . $ 7,2 Now if m is not Il to n , they will meet in a line l . $ 32 Since AB ...
By proving that A'B'BA and A'C'CA are 5 ( $ 10 , 6 ) , show that B'BCC ' is a 0 , and
hence that BC = B'C ' ( $ 10 , 3 ) . Then A ABC is congruent to A A'B'C ' . $ 7,5 ..
ZANZA . $ 7,2 Now if m is not Il to n , they will meet in a line l . $ 32 Since AB ...
Σελίδα 46
Let plane b bisect the dihedral Znm . We must first show that , if the Is PQ , PR
from any point Ptomandnare equal , Plies in b . Now q , the plane of PQ and PR ,
is I to R m and n ( $ 73 ) . Then OA is I to 9 ( $ 75 ) . Since AOPQ is congruent to A
...
Let plane b bisect the dihedral Znm . We must first show that , if the Is PQ , PR
from any point Ptomandnare equal , Plies in b . Now q , the plane of PQ and PR ,
is I to R m and n ( $ 73 ) . Then OA is I to 9 ( $ 75 ) . Since AOPQ is congruent to A
...
Σελίδα 53
The figure at the right shows a pair of these vertical dihedral angles . Proposition
17. Trihedral Angles 84. Theorem . If the three. Looked at from the point V , the
edges of ZV - ABCD are arranged counterclockwise ( from left to right ) in the
order ...
The figure at the right shows a pair of these vertical dihedral angles . Proposition
17. Trihedral Angles 84. Theorem . If the three. Looked at from the point V , the
edges of ZV - ABCD are arranged counterclockwise ( from left to right ) in the
order ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
altitude base called chord circle circumscribed common compute cone congruent Consider construct Corollary corresponding cube cubic cylinder determine diagonal diameter dihedral angles dimensions distance divided Draw drawn edges equal equilateral equivalent Exercises faces figure Find the area Find the volume follows formed formula four frustum geometry given given line greater Hence inches included inscribed intersection lateral area lateral edges lateral faces length locus lune measured meet oblique opposite parallel parallel planes pass perpendicular plane polar pole polyhedral angles polyhedron prism projection Proof proportional Proposition Prove pyramid radii radius regular pyramid respectively segment shown shows sides similar Similarly slant height solid sphere spherical spherical triangle square straight line student surface symmetric tangent tetrahedron Theorem third total surface triangle triangular trihedral unit vertex vertices volume zone
Δημοφιλή αποσπάσματα
Σελίδα 7 - The line joining the midpoints of two sides of a triangle is parallel to the third side and equal to one-half of it.
Σελίδα 40 - A line which joins the midpoints of two sides of a triangle is parallel to the third side and equal to half of it.
Σελίδα 176 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles.
Σελίδα 10 - If two triangles have two sides of the one equal respectively to two sides of the other, but the included angle of the first greater than the included angle of the second, then the third side of the first is greater than the third side of the second. Given A ABC and A'B'C...
Σελίδα 15 - In any triangle, the square of the side opposite an acute angle is equal to the sum of the squares of the other two sides diminished by twice the product of one of those sides and the projection of the other upon that side.
Σελίδα 77 - The height of a cone is the perpendicular distance from the vertex to the plane of the base.
Σελίδα 3 - If the first of three quantities is greater than the second, and the second is greater than the third, then the first is greater than the third.
Σελίδα 24 - If a straight line is perpendicular to each of two other straight lines at their point of intersection, it is perpendicular to the plane of the two lines.
Σελίδα 16 - If two chords intersect in a circle, the product of the segments of one is equal to the product of the segments of the other.
Σελίδα 15 - The sum of the squares of two sides of a triangle is equal to twice the square of half the third side increased by twice the square of the median upon that side.