The Triangle in which one of the interior angle is 90° is called a Right Angle Triangle. The longest
side of the right triangle, which is also the side opposite the right angle, is the hypotenuse and the
two arms of the right angle are the Height and the Base . This Right Angle Triangle help you to find 7
Unknown variables by providing 2 known sides only.

Select which value you are Providing (Side Length(a) , Side Length Base(b) , Side Length Hypotenuse(c) )
input value and Click on Calculate .

A=Angle A

a=Side a

B=Angle B

b=Side b

C=Angle C

c=Side c

K=Area

s=SemiPerimeter

P=Perimeter

*h*a=Altitude of a

*h*b=Altitude of b

*h*c=Altitude of c

Calculation Options

The Triangle in which one of the interior angle is 90° is called a Right Angle Triangle. The longest
side of the right triangle, which is also the side opposite the right angle, is the hypotenuse and the
two arms of the right angle are the Height and the Base .We can get the value of nine Unknown variables only if value of two variables are known . Using following formula -:

** Side of Right Triangle :**
c^{2} = a^{2} + b^{2}

Where

c = side

a = side

b = side

**Perimeter of Right Triangle :**
p = a + b + c

Where

P = Perimeter

c = side

a = side

b = side

** Semiperimeter of Right Triangle :**
s = (a + b + c)/ 2

Where

s = semiperimeter

c = side

a = side

b = side

** Area of Right Triangle :**
K = (a b )/ 2

Where

K = Area

a = side

b = side

** Altitude of a :**
*ha* = b

Where

*ha* = Altitude of a

b = side

** Altitude of b :**
*hb*= a

Where

*hb* = Altitude of b

a = side

** Altitude of c :**
*hc* = (ab)/2

Where

*hc* = Altitude of c

b = side

a = side

### How to use Right Triangle Calculator?

Step by step procedure for Right Triangle Calculator is as follows.

**Step 1: **Select which value you will be providing? Dropdown has Side (a) and Side (b) , Side (a) and Side (c) options.

**Step 2: **Input appropriate value as per selected type in Step 1.

**Step 3: **Now click on "Calculate" button to get result.

You will get Side (a) , Side (b) , Side (c) , Area (K) , Perimeter (P) , SemiPerimeter (s) , Altitude of Side Length (ha) , Altitude of Base (hb) , Altitude of Hypotenuse (hc) as per your selection and value input.