Which pairs of triangles MUST be similar? a. Triangles 1 and 2 each have one angle in common.
b. Triangles 3 and 4 are both isosceles. They each have a 60 degrees angle.
c. Triangles 5 has a 20 degrees angle and a 100 degrees angle. Triangle has a 20 degrees angle and a 60 degrees angle.
d. Triangle 7 has a 70 degrees angle and a 25 degrees angle. Triangle 8 has a 50 degrees angle and a 105 degrees angle.

B. 3&4 are isosceles.

Step-by-step explanation:

Not 100% sure, just kind of makes sense

Answer is b

Step-by-step explanation:

The triangles are equal considering the congruency ASA

PLS MARK BRAINLIEST I REALLY NEED IT

i’m here for points.

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is