Calculate the length of the sides and diagonals of the trilateral below:

Calculate the length of the sides and diagonals of the quadrilateral on the right .

Calculate the length of sides of quadrilateral. .

Calculate the length of the sides of the equilateral triangle on the right correct to a millimeter. .

Calculate the length of sides of the rectangle given below.

A rod 28 centimetres long is to be bent to make a rectangle. i) Can a rectangle of diagonal 8 centimetres be made? ii) Can a rectangle of diagonal 10 centimetres be made? iii) How about a rectangle of diagonal 14 centimetres? Calculate the lengths of the sides of the rectangles that cán be made.

In the picture, the perpendicular is drawn from the midpoint of the hypotenuse of a right triangle. to the base. Calculate the length of the third side of the large right triangle and the lengths of all three sides of the small right triangle.

Calculate the area of the triangle shown below.

Prove that the.circumcentre of an equilateral triangle is the same as its centroid. i) Calculate the length of a side. of an equilateral triangle with vertices on a circle of diameter 1 ceritimetre. ii). Calculate the perimeter of such a triạngle.