Concrete Geometry for BeginnersAmerican Book Company, 1895 - 201 σελίδες |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 65.
Σελίδα 10
... NOTE.- A surface such that if any two of its points are joined by a straight line , the line will lie wholly in the surface , is called a Plane Surface or Plane . 16. If the waves of the ocean were stilled , would its surface be a plane ...
... NOTE.- A surface such that if any two of its points are joined by a straight line , the line will lie wholly in the surface , is called a Plane Surface or Plane . 16. If the waves of the ocean were stilled , would its surface be a plane ...
Σελίδα 11
... NOTE . The word " line " is used to mean straight line . 21. Find a square corner on the floor . On the ceiling . On ... NOTE . - An Acute Angle is an angle less than a right angle . 24. Draw an obtuse angle . NOTE . - An Obtuse Angle is ...
... NOTE . The word " line " is used to mean straight line . 21. Find a square corner on the floor . On the ceiling . On ... NOTE . - An Acute Angle is an angle less than a right angle . 24. Draw an obtuse angle . NOTE . - An Obtuse Angle is ...
Σελίδα 12
... NOTE . When one line meets another so as to make two adjacent equal angles , the lines are said to be Perpendicular to each other and the angles are called Right Angles . 32. Make four right angles with two lines . 33. Make one right ...
... NOTE . When one line meets another so as to make two adjacent equal angles , the lines are said to be Perpendicular to each other and the angles are called Right Angles . 32. Make four right angles with two lines . 33. Make one right ...
Σελίδα 13
... NOTE . Perimeter . 43. How long is the perimeter of a triangle each side of which is 5 inches ? 44. Cut three strips of paper , each 7 centimeters long , place them so as to inclose the largest possible triangle , and find the length of ...
... NOTE . Perimeter . 43. How long is the perimeter of a triangle each side of which is 5 inches ? 44. Cut three strips of paper , each 7 centimeters long , place them so as to inclose the largest possible triangle , and find the length of ...
Σελίδα 14
... NOTE . A plane figure having four equal sides and four right angles is called a Square . 53. Is every square a rectangle ? Is every rectangle a square ? Explain your answers . 54. How long is each side of a square whose perimeter is 28 ...
... NOTE . A plane figure having four equal sides and four right angles is called a Square . 53. Is every square a rectangle ? Is every rectangle a square ? Explain your answers . 54. How long is each side of a square whose perimeter is 28 ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
12 inches 20 inches 9 inches altitude angle ABC angles formed apothem arc BC area and perimeter base angle bisects chord circle whose diameter circle whose radius circumference complementary angles contains cube decagon decimeters diagonal divided Draw a circle Draw a rectangle edge equal sides equilateral triangle exterior angles Find each side find its area Find the area Find the length Find the number Find the perimeter Find the ratio Find the sum geometric principle greater homologous sides hypotenuse inches long inches longer inclosed inscribed inscribed angle interior isosceles triangle longer sides meters middle point millimeters NOTE number of degrees parallel parallelogram parallelopiped pentagon perim perpendicular plane figure radii regular hexagon regular polygon rhomboid rhombus right angle right triangle scalene triangle sector semicircle shorter sides show the truth square feet square inches straight line surface tangent trapezium trapezoid triangle whose base twice vertex vertical angle width
Δημοφιλή αποσπάσματα
Σελίδα 82 - If two triangles have two sides and the included angle of one equal respectively to two sides and the included angle of the other, the triangles are equal.
Σελίδα 20 - 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 173 - The square of the sum of two numbers is equal to the square of the first, plus twice the product of the first and the second, plus the square of the second.
Σελίδα 177 - Pythagoras' theorem states that the square of the length of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the lengths of the other two sides.
Σελίδα 101 - Hence, the area of a trapezoid is equal to the product of its altitude by the line connecting the middle points of the sides which are not parallel.
Σελίδα 132 - A Polygon of three sides is called a Triangle; of four sides, a Quadrilateral; of five sides, a Pentagon ; of six sides, a Hexagon, etc.