Calculate the length of sides of quadrilateral.
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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.

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

The picture shows a square drawn sharing one cor¬ner with a right triangle and the other three corners on the sides of this triangle. Calculate the length of a side of the square. .

Calculate the length of sides of the rectangle given below.

In the figure, the diagonals of a quadrilateral split it into four triangles. The areas of three of them are shown in the picture: Calculate the area of the whole quadrilateral.

The pictures shows a tangram of 7 pieces made by cutting a square of side 4 centimetres. Calculate the length of the sides of each piece.

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

In the figure, coordinates of two vertices of a rhombus are A(-1,2) and C(7,2) . Calculate the length of one side of the rhombus. .

The bottom side of the quadrilateral in the picture is a diameter of the circle and the top side is ạ chord parallel to it. Calculate the area of the quadrilateral.

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.