Answer:
SAS Postulate
Two sides and the included angle of one triangle are congruent to two sides and the included angle in a second triangle, then the two triangles are congruent.
Answer:
6
Step-by-step explanation:
Answer:
[-8,8]
Step-by-step explanation:
X+y=57
y=x+15
x+x+15=57
2x=42
x=21
y=21+15
y=36