For BRAINILY please help I need to pass this class

Answer:
p= 40
Step-by-step explanation:
The sum of the angles of a triangle is 180 degrees
p+100+40 =180
p+140=180
p = 180-140
p= 40
Answer:
The answer is 40°. W and X are congruent to each other.
Define:
Congruent: Triangles that have both the same shape and the same size.
Straight line= 180degrees
Scalene triangle: A triangle that has no equal sides.
Isosceles Triangle: a triangle that has two sides the same length.
Equilateral triangle: A triangles all three sides are congruent.
Hope this helps!