It is always isosceles because it can be proved as follows:
The perpendicular bisector dissects the triangle into two, and it is the common side. Then each side of the bisector is 90 degrees, and the bisected to two equal sides, so the two dissected triangles are congruent, hence the original triangle is isosceles.
Answer:
x = 40
Step-by-step explanation:
180 = 100 + x +x
180-100= 2x
80 = 2x
x = 40
180 - 79
101 degrees is the answer
Answer:
Josh was driving faster
Step-by-step explanation:
Josh was going faster becuase 320 divided by 4 is 80
and 225 divided by 3 is 75.
In conclusion Josh was going faster by 5mph.
Answer:



This might not be correct though. I'm only in middle school lol. I am sure about the last one.