Draw a triangle ABC and measure its sides.

Draw a triangle ABC and mark the midpoints E and F of two sides of triangle. bar(AB) and bar(AC) respectively. Join the point E and F as shown in the figure. Measure EF and the third side BC of the triangle. Also measure angleAEF and angleABC .

If Delta be the area of a triangle ABC and length of its two sides are 3 and 5. If c is the third side, then

In a right triangle ABC, a circle with a side. AB as diameter is drawn to intersect the hypotenuse AC in P. Prove that the tangent to the circle at P bisects the side BC.

Draw a triangle whose one of the side is 7.2 cm and adjacent angles of this side are 50^@ and 70^@ . Now draw the incircle of this traingle.

Each question in this section has four choices A,B,C,and D out of which only one is correct. Mark your choices as follows. Statement-I: The error made in calculating the area of the triangle ABC where the sides a and b are measured accurately as 25cm and 16 cm respectively. while the angle C is measured as 60^(@) with an error of ((1)/(2))^(@) . Estimated error of the area of the triangle is (55)/(63) cm ^(2) . Statement-II : Area of triangle ABC = (1)/(2) ab sin C.

Draw a triangle whose two sides are 9 cm and 7 cm in length and the angle between two sides is 60^@ . Draw the incircle of this triangle.

Estimate the error made in calcutating the area of the triangle ABC in which the sides a and b are measured accurately as 25 cm and 16cm, while the angle C is measured as 60^(@) but ((1)/(2))^(@) in error.

Draw a triangle whose two side are 7.6 cm and 6 cm in length and the angle between them is 75^@ . Now draw the incircle of this triangle.

Find the lengths of chords of the circumcircle of triangle ABC, made by its altitudes__________

If L,M,N divide the sides BC,CA and AB of a triangle ABC in the same ratio, then show that the traiangle ABC and dLMN have the same centroid.