You can prove it by the SAS postulate which should be the first option
Angle 3 and angle 4 are supplementary angles and when added together need to equal 180 degrees.
To find angle 4 subtract angle 3 from 180.
Angle 4 = 180 - 101 = 79 degrees.
Answer:
(19.6,-12)
Step-by-step explanation:
1. plug in the numbers for the variables, like this: 9(-5)+18(-1)
2. solve
Hopefully this helps! Let me know if you need more explanation.
Answer:
B. x = 14, y = 14
Step-by-step explanation:
Look up "45 45 90 triangle" to see rules that are consistent between all triangles like this.
