Name the types of following triangles:(f) ∆LMN with m∠L = 30⁰, m∠M = 70⁰ and m∠N = 80⁰

Name the types of following triangles:(d) ∆DEF with m∠D =90⁰

Name the types of following triangles:(e) ∆XYZ with m∠Y =90⁰ and XY=YZ.

Write opposites of the following : (c ) 80 m east

H.M of exradii of a triangle is

Factorize the following expressions: 25m^2+30m+9

Write the denominator of the following rational numbers in 2^(n)5^(m) form where n and m are non-negative integers and then write them in their decimal form 80/100

Factorize two following expressions. 20 l^2m+30alm

The angle between the lines whose direction cosines satisfy the equations l+ m +n =0 and l^2= m^2 + n^2 is: