Question

if the diagonals of a quadrilateral ABCD intersect at right angles and fi AB=70 , CD=3cm. find BC^2+DA^2

Answer 1

Answer:

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Answer 2

In triangle ABC, ∠B equals to 90° and D is midpoint of BC. Prove that AC 2 =AD 2 + 3 CD 2

in tringle ABC, angle B is 90 °and D is the mid point of BC . prove that 1. AC² = AD² + 3CD² 2.BC²= 4(AD² -AB²)

In rhombus ABCD , prove that : AB^2 + BC^2 + CD^2 + AD^2 = AD^2 + BD^2

ABC is a right angled triangle in which ∠ABC = 90° and ∠ACB = 60°. BC is produced to D such that ∠ADB = 45°. If CD = 30 cm, what are the lengths of AB and BC?

The sides of a right triangle containing the right angle are (5x) cm and (3x-1) cm. If the area of the triangle is 60 cm^2, calculate the length of the sides of the triangle.

In an isoceles triangle ABC, AB=AC and D is a point BC produced. Prove that AD^2=AC^2 + BD * CD.