The fig.16 has been obtained by using two triangles. Find `/_A+/_B+/_C+/_D+/_E+/_Fdot`

In the six cornered figure, (fig.20), AC,AD and AE are joined. Find /_F A B+/_A B C+/_B C D+/_C D E+/_D E F+/_E F Adot

In a triangle ABC,/_B=105^(0),/_C=50^(@) , Find /_A

Fill in the blanks in the following so that each of the following statements is true Sides opposite to equal angles of a triangle are ....... Angle opposite to equal sides of a triangle are ....... In an opposite to equal sides of a triangle are ....... In a A B C if /_A=/_C , then A B= ..... If altitudes C E a n d B F of a triangle A B C are equal, then A B= ........ In an isosceles triangle A B C with A B=A C , if B D a n d C E are its altitudes, then B D is .......... C E In right triangles A B C a n d D E F , if hypotenuse A B=E F and side A C=D E , then A B C ~= ....

In Fig.87, the corresponding arms of /_A B C\ a n d\ /_D E F are parallel. If /_A B C=75^0, find the /_D E Fdot

Two triangles ABC and DEF such that /_A=/_D,/_B=/_E and /_C=/_F. Then

If any two angles and a non-included side of one triangle are equal to the corresponding angles and side of another triangle, then the two triangles are congruent. GIVEN : Two s A B C and D E F such that /_A=/_D ,/_B=/_E ,B C=E F TO TROVE : A B C~=D E F Figure

Two triangles are congruent if two angles and the included side of one triangle are equal to the corresponding two angles and the included side of the other triangle. GIVE : Two s A B C and D E F such that /_B=/_E ,/_C=/_F and B C=E F TO PROVE : A B C~=D E F

In a Delta ABC; if 2/_A=3/_B=6/_C Determine /_A;/_B and /_C

In figure, O is a point in the interior of a triangle ABC, O D_|_B C ,O E_|_A C and O F_|_A B . Show that (i) O A^2+O B^2+O C^2-O D^2-O E^2-O F^2=A F^2+B D^2+C E^2 (ii) A F^2+B D^2+C E^2=A W^2+C D^2+B F^2