# Math

posted by .

A store's sign is the shape of an equilateral triangle. One side measures 21 inches. What is the length of each of the other two sides?

• Math -

Equilaterial: all sides equal.

• Math -

http://www.mathsisfun.com/triangle.html

• Math -

Thank you very much...

• Math -

You're welcome.

## Similar Questions

1. ### Algebra

The perimeter of an equilateral triangle is 7 in. more than the perimeter of a square. The side of the triangle is 5 in. longer than the side of the square. Find the length of each side of the triangle. (Note: An equilateral triangle …
2. ### triangles

The measures of two of the sides of an equilateral triangle are 3x + 15 in. and 7x – 5 in. What is the measure of the third side in inches?
3. ### Math

the perimeter of an equilateral triangle is 50 inches longer than the length of one side. What is the length of one of the sides?
4. ### math i don't get it

If 6 equilateral triangles are placed side by side so that only two sides of each triangle touch one of the other triangles, what shape is formed?
5. ### Math

how to explain to my child this math problem : davia draws a shape with 5 sides .Two sides are each 5 inches long . Two other sides are 4 inches long.The perimeter of the shape is 27 inches . What is the length of the fifth side?
6. ### Math

If six equilateral triangles are placed side by side so that only two sides of each triangle touch one of the other triangles what shape is formed?
7. ### Algebra 2

An equilateral triangle with side length 2" will have a height of square root 3 inches. A yield sign is an equilateral triangle with perimeter of 5 ft. To the nearest inch, what is the height of the yield sign?
8. ### Math

Two equilateral triangles are sitting side-by-side. The length of one side of Triangle A is 5 ft. The sides of Triangle B are 3 times as long as those of Triangle A. How long is the length of one side of Triangle B?
9. ### Algebra

the perimeter of a triangle is 56 inches. the longest side measures 4 inches less than the sum of the other two sides. three times the shortest side is 4 inches more than the longest side. find the lengths of the three sides
10. ### Math 8

A stop sign has each side measures of 12.4 inches, and the distance from any side to the opposite side is 30 inches. Divide the stop sign into one rectangle and two trappezoids. What are the dimensions of the rectangle and each of …

More Similar Questions