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12 inches 20 inches 9 inches ABCD adjacent altitude angles formed base base angle called centimeters chord circle whose radius circumference Cloth coincide common Compare Construct contains cube cubic diagonal diameter difference distance divided Draw drawn edge equal sides equilateral triangle exterior angle extremities faces feet figure Find the area Find the length Find the perimeter Find the ratio four Give given greater hexagon History Illustrate inches long inches longer inscribed interior isosceles triangle Join kind larger less measure meters middle point millimeters NotE opposite parallel parallelogram perpendicular Place polygon PRINCIPLE prolonging proportion QUERY Quote radii rectangle regular hexagon represent rhomboid rhombus right angle right triangle rods sector segment shorter similar smaller solid square inches straight line SUGGESTION supplement surface tangent trapezium trapezoid triangle ABC twice vertex wide width
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 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.