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How many more sides does a nonagon have than a heptagon?
2. A nonagon has 9 sides and a heptagon has 7 sides. If you subtract 7 from 9 (9-7), only 2 sides remain.
Which figure has 7 sides?
The polygon of seven(7) sides is named an 'HEPTAGON'. For the given number of sides of other polygons, the prefix is 3 = tri ( trigon / triangle) 4 = tetragon ( rectangle/ quadrilaterial) 5 = penta 6 = hexa 7 = hepta ( as above) 8 = octa 9 = nona 10 = deca.
Perimeter of a square with area of 81?
36 - here's how you get this answer: 81/9=9 The area is found by multiplying two sides, so take the square of 81 to get the two equal side measures. In this problem, the number is 9. A square has four equal sides. Two of the sides are 9. Since all sides are congruent, the other two sides must be 9, too. To get the perimeter of a square, you add up all four sides. 9+9+9+9=36 or you could do 9x4 to get 36 also. Good Luck! :)
What is the perimeter of an equilateral triangle with 9-cm sides?
9+9+9 = 27 cm
Solve for x 12x plus 9 equals 10x plus 1?
12x + 9 = 10x + 1 Subtract 10x from both sides: 2x + 9 = 1 Sutract 9 from both sides: 2x = - 8 Divide both sides by 2: x = -4
