Question

in congruent triangles ABC and DEF, angle A = angle E = 40 degree, and angle F =65 degree, then angle B = ?​

Answer 1

3x+2y=12

5x−2y=4

plotting graph: 3x+2y=12

x

0

6

2

y

6

0

3

plotting graph: 5x−2y=4

x

0

4/5

2

y

-2

0

3

The solution is (2,3)

The points where they meet y-axis , (0,6) and (0,−2).

reply me

Answer 2

Answer:

Angle a + Angle b + Angle c = 180°

40°+ Angle b + 65° = 180°

105°+ Angle b = 180°

Angle b = 180° - 105°

Angle b = 75°