If you know only the base and height, you have two unknown sides and it is not possible to calculate the perimeter. The perimeter can have any value greater than or equal to 5+sqrt(89) cm.
You will use what you know about the triangle, including the size of sides or angles of that specific triangle, plus properties of any special category of triangles of which it is a member, to calculate the unknown height.
If a perimeter of 8 is obtained by adding 5 and unknown number, then the unknown number is 3.2.
Use the Pythagorean Theorem to determine the missing side. That is, if the sides are A, B, and C, C being the longest, then A2 + B2= C2. So if the long side is missing, side A is 3, and side B is 4, then 3 squared is 9 and 4 squared is 16. 9+16=25. The square root of 25 is 5, the length of the missing side of THAT triangle. Add all three sides together to get the perimeter.
Assuming the triangle is a right-angle triangle you could follow the following equation: a2 (Base) + b2 (Height) = c2 (Unknown Side) Then you square root the Unknown Side's answer. (Squareroot equals a number multiplied by itself to reach your original number) E.g. 22 + 42 = C2 4 + 16 = 202 Sqaure Root of 20 = 4.472136 or 4.47 (Rounded off to 2 decimal places) Therefore the perimeter of the triangle is 2 + 4 + 4.47 = 10.47 (cm, m km - whatever unit you are using)
If two sides are given and you need to know the length of the third side use the Pythagrean Theorem formula. Then you find the square root. c² = a² + b²* * * * *That is useful only if the triangle is a right angled triangle. Most are not. The correct answer depends on what information you do have.
subtract the two sides that you know from the perimeter to get the unknown side.
You begin by finding the length of the unknown side. The square of the hypotenuse is equal to the sum of the squares of the two legs. Then once you have the lengths of all 3 sides, you adum all up, and you have the perimeter.
You will use what you know about the triangle, including the size of sides or angles of that specific triangle, plus properties of any special category of triangles of which it is a member, to calculate the unknown height.
If a perimeter of 8 is obtained by adding 5 and unknown number, then the unknown number is 3.2.
Use the Pythagorean Theorem to determine the missing side. That is, if the sides are A, B, and C, C being the longest, then A2 + B2= C2. So if the long side is missing, side A is 3, and side B is 4, then 3 squared is 9 and 4 squared is 16. 9+16=25. The square root of 25 is 5, the length of the missing side of THAT triangle. Add all three sides together to get the perimeter.
Assuming the triangle is a right-angle triangle you could follow the following equation: a2 (Base) + b2 (Height) = c2 (Unknown Side) Then you square root the Unknown Side's answer. (Squareroot equals a number multiplied by itself to reach your original number) E.g. 22 + 42 = C2 4 + 16 = 202 Sqaure Root of 20 = 4.472136 or 4.47 (Rounded off to 2 decimal places) Therefore the perimeter of the triangle is 2 + 4 + 4.47 = 10.47 (cm, m km - whatever unit you are using)
Trigonometry is basically formula's to help you find out unknown sides and angles of a triangle. Surveying is measuring land. But as not all land is equal so these formula's are used to help.
It works out as: 180 minus the 2 known angles = unknown angle
From geometry, we know that it is possible to calculate unknown lengths and angles of a triangle given particular information regarding the other angles and lengths of the sides of a triangle. For example, given beginning coordinates such as (x,y) in plane coordinates or the latitude and longitude, it is then possible to calculate new coordinates by measuring certain angles and distances (lengths of sides of a triangle).
If two sides are given and you need to know the length of the third side use the Pythagrean Theorem formula. Then you find the square root. c² = a² + b²* * * * *That is useful only if the triangle is a right angled triangle. Most are not. The correct answer depends on what information you do have.
From that information, you can't. All you know is their sum, but you can't tell their individual lengths. There are actually an infinite number of different possibilities that all work.
It has to be 45 degrees.