answersLogoWhite

0


Best Answer

Yes, 28 is a triangular number. It is equal to 7 + 6 + 5 + 4 + 3 + 2 + 1, or (7 x 8) / 2.

User Avatar

Wiki User

βˆ™ 14y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

βˆ™ 8y ago

Yes.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Is 28 a triangle number
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

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.


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 What is the area of the triangle?

Area = 0.5*21*28 = 294 square inches


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


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


What is the third triangle number?

The third triangle number is 6.