Plane and Solid GeometryAmerican Book Company, 1899 - 384 σελίδες |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 56.
Σελίδα 38
... Isosceles Triangle . 91. A triangle whose three sides are equal is called an Equilateral Triangle . 92. The side upon which a triangle is assumed to 38 PLANE GEOMETRY . - BOOK I. Triangles.
... Isosceles Triangle . 91. A triangle whose three sides are equal is called an Equilateral Triangle . 92. The side upon which a triangle is assumed to 38 PLANE GEOMETRY . - BOOK I. Triangles.
Σελίδα 39
... triangle . Since any side of a triangle may be considered as its base , it is evident that a triangle may have three altitudes and that they will be unequal , if the sides of the triangle are unequal . If the triangle is equilateral ...
... triangle . Since any side of a triangle may be considered as its base , it is evident that a triangle may have three altitudes and that they will be unequal , if the sides of the triangle are unequal . If the triangle is equilateral ...
Σελίδα 47
... equilateral triangle compare ? Theorem . In an isosceles triangle the angles opposite the equal sides are equal . Data : Any isosceles triangle , as ABC , in which AC BC . = To prove angle 4 = angle B. Proof . Draw CD bisecting ≤ c ...
... equilateral triangle compare ? Theorem . In an isosceles triangle the angles opposite the equal sides are equal . Data : Any isosceles triangle , as ABC , in which AC BC . = To prove angle 4 = angle B. Proof . Draw CD bisecting ≤ c ...
Σελίδα 48
... triangle is it ? 2. How do the sides of an equiangular triangle compare in ... isosceles . Proof . Draw CD bisecting C. Then , in A ADC and BDC , data , LA ... isosceles . tv A B Q.E.D. 119. Cor . An equiangular triangle is also ...
... triangle is it ? 2. How do the sides of an equiangular triangle compare in ... isosceles . Proof . Draw CD bisecting C. Then , in A ADC and BDC , data , LA ... isosceles . tv A B Q.E.D. 119. Cor . An equiangular triangle is also ...
Σελίδα 49
... isosceles triangle at its middle point . How does it divide the triangle ? How does it divide the vertical angle ? 3. Draw a line from the vertex of an isosceles triangle and perpen- dicular to the base . How does this line divide the ...
... isosceles triangle at its middle point . How does it divide the triangle ? How does it divide the vertical angle ? 3. Draw a line from the vertex of an isosceles triangle and perpen- dicular to the base . How does this line divide the ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD adjacent angles altitude angle formed angles are equal angles compare apothem arc intercepted base bisector bisects called central angle chord circle whose center circumference circumscribed compare in length Construct a triangle Data diagonals diameter dihedral angles distance divide equal circles equidistant equilateral triangle equivalent exterior extremities Find the locus frustum given line given point given straight line Hence homologous homologous sides hypotenuse inscribed angle interior angles intersecting isosceles trapezoid isosceles triangle line drawn measured by arc middle point number of sides opposite sides parallel lines parallelogram parallelopiped pass perimeter perpendicular plane prism produced Proof proportion prove pyramid Q.E.D. Proposition quadrilateral radii radius ratio rect rectangle formed regular polygon respectively rhombus right angles right triangle secant segment similar sphere spherical triangle subtended surface tangent Theorem transversal trapezoid triangle ABC triangles are equal trihedral vertex vertical angle
Δημοφιλή αποσπάσματα
Σελίδα 103 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Σελίδα 147 - Sines that the bisector of an angle of a triangle divides the opposite side into parts proportional to the adjacent sides.
Σελίδα 65 - The line joining the middle points of two sides of a triangle is parallel to the third side and equal to half of the third side.
Σελίδα 45 - After remarking that the mathematician positively knows that the sum of the three angles of a triangle is equal to two right angles...
Σελίδα 62 - From 56 and 57 the pupils should learn that two triangles are equal in every respect (a) when two sides and the included angle of one are equal to two sides and the included angle of the other...
Σελίδα 59 - If the opposite sides of a quadrilateral are equal, the figure is a parallelogram.
Σελίδα 81 - A circle is a plane figure bounded by a curved line, every point of which is equally distant from a point within called the center.
Σελίδα 45 - In an isosceles triangle the angles opposite the equal sides are equal.
Σελίδα 31 - If two parallel lines are cut by a third straight line, the sum of the two interior angles on the same side of the secant line is equal to two right angles.
Σελίδα 88 - In the same circle, or in equal circles, equal chords are equally distant from the center; and, conversely, chords equally distant from the center are equal.