Concrete Geometry for BeginnersAmerican Book Company, 1895 - 201 σελίδες |
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Σελίδα 38
... interior angles . 98. Name the two pairs of alternate exterior angles . NOTE . — Two angles which are on the same side of the trans- versal , one interior and the other exterior , but not adjacent , are called Opposite Interior and ...
... interior angles . 98. Name the two pairs of alternate exterior angles . NOTE . — Two angles which are on the same side of the trans- versal , one interior and the other exterior , but not adjacent , are called Opposite Interior and ...
Σελίδα 39
... interior angle shall be 70 ° ? 101. Reproduce the figure in Ex . 94 , changing it so as to make angle EGB 60 ° . How many degrees are there in angle GHD ? - PRINCIPLE 13. When two parallel lines are cut by a transversal , the opposite ...
... interior angle shall be 70 ° ? 101. Reproduce the figure in Ex . 94 , changing it so as to make angle EGB 60 ° . How many degrees are there in angle GHD ? - PRINCIPLE 13. When two parallel lines are cut by a transversal , the opposite ...
Σελίδα 40
... interior angles , x or y ? Which is the greater of the two alternate exterior angles , the angle which is 70 ° or angle m ? - A C E 70 ° B 20 y m PRINCIPLE 14. When two parallels are cut by a transversal , the alternate interior angles ...
... interior angles , x or y ? Which is the greater of the two alternate exterior angles , the angle which is 70 ° or angle m ? - A C E 70 ° B 20 y m PRINCIPLE 14. When two parallels are cut by a transversal , the alternate interior angles ...
Σελίδα 42
... interior angles on the same side of the transversal ? ― PRINCIPLE 15. When two parallels are cut by a transversal , the sum of the interior angles on the same side is equal to two right angles . 121. When the angle ƒ is twice the angle ...
... interior angles on the same side of the transversal ? ― PRINCIPLE 15. When two parallels are cut by a transversal , the sum of the interior angles on the same side is equal to two right angles . 121. When the angle ƒ is twice the angle ...
Σελίδα 67
... interior base angle . How many degrees are there in the sum of the base angles ? How many in their difference ? 16. The exterior angle formed by prolonging one of the legs of an isosceles triangle is 26 ° more than a base angle . How ...
... interior base angle . How many degrees are there in the sum of the base angles ? How many in their difference ? 16. The exterior angle formed by prolonging one of the legs of an isosceles triangle is 26 ° more than a base angle . How ...
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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.