Draw an angle and label it as `/_B A Cdot` Construct an angle `/_E D F` such that `/_E D F=2\ /_B A C` .

Draw an angle and label it as /_B A Cdot Construct another angle, equal to /_B A Cdot

The sides B C ,\ C A\ a n d\ A B\ of a triangle A B C , are produced in order, forming exterior angles /_A C D ,\ /_B A E\ a n d\ /_C B Fdot Show that /_A C D+\ /_B A E+\ /_C B F=360^0

A B C D is a parallelogram. E is a point on B A such that B E=2\ E A\ a n d\ F is a point on D C such that D F=2\ F C . Prove that A E C F is a parallelogram whose area is one third of the area of parallelogram A B C D .

Two triangles are congruent if include 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 triangle A B C and D E F such that /_B=/_E ,/_C=/_F and B C=E F TO PROVE : triangle A B C~=triangle D E F

Two triangles are congruent if two sides and the included angle of one are equal to the corresponding sides and the included angle of the other triangle. GIVEN : Two triangles A B C and D E F such that A B=D E ,A C=D F and /_A=/_D PROVE : A B C~= D E F Figure

The sides B C ,C A and A B of a triangle A B C , are produced in order, forming exterior angles /_A C D ,/_B A E and /_C B F . Show that /_A C D+/_B A E+/_C B F=360^0

The sides B C ,C A and A B of a triangle A B C , are produced in order, forming exterior angles /_A C D ,/_B A E and /_C B F . Show that /_A C D+/_B A E+/_C B F=360^0

The sides B C ,C A and A B of a triangle A B C , are produced in order, forming exterior angles /_A C D ,/_B A E and /_C B F . Show that /_A C D+/_B A E+/_C B F=360^0

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 PROVE : A B C~=D E F Figure

In Figure, A B||C F\ a n d\ B C||E D . Prove that /_A B C=\ /_F D E