If `Delta ABC ~= Delta DEF ` write the parts of `Delta ABC ` that correspond to
` angle F`

In Delta ABC, r =

For Delta ABC , find the measure of angle ACD .

Explain, why Delta ABC ~= Delta FED

Is Delta PQR ~= Delta XYZ ? Also, write the corresponding angles of the two triangles.

In Delta ABC , if 2R= r_1-r then angle A=

Delta ABC ~ Delta DEF . BC = 4 cm and EF=6cm area of Delta ABC = 54 cm^(2) Determine the area of Delta DEF .

Assertion (A) : The radius of the circle inscribed in the triangle obtained by joining the middle points of the sides of Delta ABC is equal to half the radius of incircle of Delta ABC Reason (R ) : In Delta ABC, D,E,F be midpoints of the sides of Delta ABC , Delta ' , 2s' denotes area and perimeter of Delta DEF " then " Delta ' = Delta//4 and s' =s//2

In a Delta ABC , if the angle C is obtuse, then tan A ta B =