angles of a square

. AC 2 = 10 2 + 2 2 = 104 sq. units AB 2 + BC 2 = 52 + 52 = 104 sq. units AC 2 = 104 sq. units Hence AB 2 + BC 2 = AC 2 If ABCD is a square, then diagonals bisect each other at right angles. O is the mid point of..

. The diagonals bisect the angles of the rhombus. If the diagonals of a parallelogram are at right angles, it is a rhombus. Some special constructions: 1. Construction of Parallelograms when (a) Two sides and an angle are given (b) Diagonals and the angle inc..

Question: (a) A right angled triangle ABC has its vertices A (4, 0), B (0, 0) and C (0, 2). Plot the points on a graph paper and find the area of the triangle. (b) Plot the following points on a graph paper and name the figure formed: P (5, -3), Q (5, 0), R (2, 0). Find its area. ..

Parallelograms - Parallelogram is a quadrilateral whose opposite sides are parallel and equal. A rectangle, a rhombus and a square are considered as parallelograms. A trapezoid is quadrilateral with exactly one pair of opposite sides being parallel. Hence, it is not a parallelogram. You h..

Summary - The centre of mass is an imaginary point where one can assume the entire mass of the given system or object to be positioned. Principle of conservation of linear momentum states that the linear momentum of a system remains constant if the external forces acting on the system add up to zer..

>, on the other hand, is coated so as to be slightly "leaky," so that a small fraction of the laser light can escape at each reflection to form the useful beam. The windows W, W in the above figure, which close the ends of the discharge tube, are slanted so that their normals make an angle..

transmitted by T 1 and T 2 remain unaffected. However, when axes of the two crystals are at 90 0 to each other, light is completely cut off. This establishes that light waves are transverse in character. When unpolarised light is seen through a single crystal (polaroid), intensity of transmitted li..

.c. It is represented by I r m s , I e f f or I v . It can be shown that All a.c. instruments measure virtual values of a.c. The behavior of an ohmic resistance R in a.c. circuit is the same as in d.c. circuit. Through alternating EMF and alternating current are in same phase. Inductive reactance (..

of A. Moreover, in the right-angled D ONP, Cos q = A x / A or A x = A Cos q --(1) Squaring and adding 1 and ..