Match the following : Measures of Triangle Type of Triangle (iv) 3 acute angles

Match the following : Measures of Triangle Type of Triangle (v) 1 right angle

Match the following : Measures of Triangle Type of Triangle (vii) 1 right angle with two sides of equal length

Match the following : Measures of Triangle Type of Triangle (vi) 1 obtuse ahgle

Match the following : Measures of Triangle Type of Triangle (iii) All sides are of different length

Match the following : Measures of Triangle Type of Triangle (ii) 2sides of equal length

Which of the following are the side of the right-angles triangle ?

Which of the following pieces of data does NOT uniequely determine an acute angled triangle ABC ( R being the radius of the circumcircle) ?

Which of the following pieces of data does NOT uniquely determine an acute angled triangle ABC (R being the radius of the circumcircle) ?

Prove the following identities,where the angles involved are acute angles for which the expressions are defined. (iv) (1+secA)/(secA)=(sin^(2)A)/(1-cosA)

By giving a counter example, show that the following statements are not true. (i) p: If all the angles of a triangle are equal, then the triangle is an obtuse angled triangle.