0
Yes, 28 is a triangular number. It is equal to 7 + 6 + 5 + 4 + 3 + 2 + 1, or (7 x 8) / 2.
Wiki User
∙ 14y ago
Wiki User
∙ 8y agoYes.
Add your answer:
Earn +20 pts
Triangle number of 28?
28 is a triangle number. The 28th triangle number is 406.
What number is a square and triangle number?
36 is both a square number and a triangle number as it is:6x6=36andthe square numbers are:1, 3, 6, 10, 15, 21, 28, 36, 45,55, 66, 78.xx
Is 23 a triangle number?
No, 23 is not a triangular number. Here are a few examples of triangular numbers: 21, 28, 55, 45, 78 and 91.
The legs of a right triangle are 21 and 28 inches long What is the area of the triangle?
Area = 0.5*21*28 = 294 square inches
Is 12in 14 in 28 in a triangle?
No because 12+14 = 26 which is less than 28 and so therefore constructing a triangle is impossible.
Triangle number of 28?
28 is a triangle number. The 28th triangle number is 406.
What number is a square and triangle number?
36 is both a square number and a triangle number as it is:6x6=36andthe square numbers are:1, 3, 6, 10, 15, 21, 28, 36, 45,55, 66, 78.xx
Is 23 a triangle number?
No, 23 is not a triangular number. Here are a few examples of triangular numbers: 21, 28, 55, 45, 78 and 91.
When was Triangle Heart created?
Triangle Heart was created on 2000-08-28.
The legs of a right triangle are 21 and 28 inches long What is the area of the triangle?
Area = 0.5*21*28 = 294 square inches
Is 12in 14 in 28 in a triangle?
No because 12+14 = 26 which is less than 28 and so therefore constructing a triangle is impossible.
The legs of a right triangle are 21 and 28 inches long respectively. What is the area of the triangle?
Area = 0.5*21*28 = 294 square inches
What is the triangle number of 13?
13 is not a triangle number. The 13th triangle number is 91.
If the base of an isosceles triangle is 22 and the height is 28 how do you figure out the area?
area of a triangle is half the base times the height .5*22*28=308
What kind of triangle has sides of 44mm 28 mm 24mm?
That's an isosceles triangle.
What is the area or the right triangle 28 cm 35 cm?
The right-angle triangle measures 28cm by 35cm. Such a triangle is half of a rectangle.Therefore 28 x 35 = 980cm2 is the area of a rectangle.980 / 2 = 490cm2 will give the area of the triangle (which is 490cm2).
The base of a triangle is 8cm the triangle has an area of 28cm squared What is the height of the triangle?
Area of a triangle = 1/2 * base * heightWe have,Area = 28 cm squared, base = 8cmthen,28 = 1/2 * 8 * h28 = 4*hh = 7cm
