0
1 (1)
3 (1 + 2)
6 (1 + 2 + 3)
10 (1 + 2 + 3 + 4)
15 (1 + 2 + 3 + 4 + 5)
21 (1 + 2 + 3 + 4 + 5 + 6)
28 (1 + 2 + 3 + 4 + 5 + 6 + 7)
36 (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8)
45 (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9)
55 (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10)
66 (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11)
78 (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12)
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A triangle has an area of 144 sq inches and its base is 2 ft long What is the altitude of the triangle?
First convert the base to the same kind of units you have defined the area in (but linear); 24 inches. The area of a triangle is half of the base times the height .12 (half the base) times what is 144?12, the height (altitude) of the triangle is 12 inches (one foot).
What are the first 20 triangle numbers?
Calculate n*(n+1)/2 for n=1, 2, 3, ... , 20.
How can you tell if 3 sides of a triangle are acute or obtuse?
First you would square the length of each of the sides. You'd add the squares of the smaller two numbers. If they are smaller than the square of the biggest side, then the triangle is obtuse. If their sum is bigger, then the triangle is acute. If they are equal, then the triangle is a right triangle.Example:length of sides-23, 34, 49232+342__492529+1156__24011685
The area of a triangle is 6 square units Both the height and the length of the base are whole numbers What are the possible lengths and heights?
1&12, 2&6, 3&4!
What numbers can represent the side lengths of a right triangle?
Any three numbers, a, b, and c, which satisfy the equation a2 + b2 = c2 will form the sides of a right triangle. Some common values are 3, 4, 5 (and all multiples), 5, 12, 13 (and all multiples), and 7, 24, 25 (and all multiples).
What are the first 5 triangular numbers?
Triangle numbers or triangular numbers are those numbers that can form an equilateral triangle when counting the objects. The first five triangular numbers are: 1, 3, 6, 10, 15.
What are the first 2 triangular numbers?
The first two triangle numbers are 3 and 6. [Unless you start with 1 as the first.]
Are the numbers 72 68 and 12 measurements of a right triangle?
No. If the legs of a right triangle measure 12 and 68, then the hypotenuse measures just a bit over 69.
What are the first 6 triangle numbers?
The first six triangular numbers are : 1,3,6,10,15,21. However, sometimes the first triangular number is regarded as 0 (zero) so you then have 0,1,3,6,10,15 as the first six triangular numbers.
What is the answer for the triangle 12 cm?
It depends on two things. First, one length, by itself, does not define a triangle. And second, it depends on what the question about the triangle is!
What does triangular number mean?
Triangluar numbers or triangle numbers are numbers formed from the summation of all the numbers smaller than them. The first few triangle numbers are 1,3,6,10,15,21... If you think of a pyramid with a base of two blocks, and one on top, there are three blocks. If you add a base of three to that pyramid, you have six blocks. Then ten, and fifteen and so on. That is why they are called Triangle numbers.
Are the numbers 28 26 and 12 measurements of a right triangle?
Nearly but not quite exactly because they don't comply with Pythagoras' theorem for a right angle triangle.
How do you decipher the next line of a number triangle math puzzle?
It depends on what the first numbers are.
What are the first 12 numbers of Pi?
The first twelve numbers of pi are 3.14159265358
What is the first ten triangle numbers?
Depending upon the definition used, the first 10 natural numbers are either: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or (first appearing in the 19th century): 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
How are the odd numbers arranged in Pascal's Triangle?
how are the odd numbers arranged Pascal's Triangle?
What arethe first 6 triangle numbers?
1, 3, 6, 10, 15, 21
