Question

If triangle ABC is congruent to triangle DEF and angle A=50,angle F=60,then find angle B

Answer 1

Triangle ABC is congruent to Triangle DEF so measure angle A is congruent to measure angle D, angle E congruent to angle B n angle C congruent to angle F so their measures are also equal therefore A=D=50,F=C=60 .we know that sum of measures of all angles of triangle is 180 therefore measure of angle B=180-A+C=180-50+60=180-110=70. Therefore angle B=70

Answer 2

Answer:

Step-by-step explanation:

Triangle ABC is congruent to Triangle DEF

so measure angle A is congruent to measure angle D, angle E

congruent to angle B n angle C congruent to angle F so their measures are also equal therefore A=D=50, F=C=60.(by CPCT)

we know that sum of measures of all angles of triangle is 180,

∠a+∠b+∠c=180(angle sum property

50+∠b+60=180

110+∠b=180

∠b=180-110

∠b=70

hope you understand my friend