RS Aggarwal Solutions Class 7 Maths Chapter 20 Ex 20.4 (Updated For 2021-22)

 

It consists of three sides namely – Base, Height, and hypotenuse. Here, the angle is 90 degrees between the height and the base. Also, the hypotenuse is the longest side here. These three things are used to develop the Pythagoras theorem. This theorem can be defined as below – 

 

 

Right Angle Triangle Properties

• In the “Right Angle Triangle”, one of the angles will always be equal to 90 degrees or the right angle.
• In the “Right Angle Triangle “, the hypotenuse side is the side that is opposite to the 90 degrees angle. 
• In the “Right Angle Triangle”, the hypotenuse is always on the longest side. 
• In the “Right Angle Triangle”, the sum of the remaining two angles will always be equal to 90 degrees.
• In the “Right Angle Triangle”, the neighbouring sides are called the base and the perpendicular.
• In the “Right Angle Triangle”, its area is equivalent to half of the product of the right angle triangle’s neighbouring sides i.e., Area ( Right Angle Triangle ) =  ( 1 / 2 ) ( Base /  Perpendicular ).
• In the “Right Angle Triangle”, in case the perpendicular line is being made from the right angle till the hypotenuse, then in this case, it will result in the total of the three similar triangles.
• In the “Right Angle Triangle”, a circumcircle is being drawn passing via all the 3 vertices – in this case, the ‘Radius of the Same circle will be equivalent to the hypotenuse’s half-length.’