Answer:
Option A is correct : . a=115, b=71
Step-by-step explanation:
Consider the attached file.
AB is parallel to CD.
∠1+ a° = 180° (since sum of linear pairs is 180°) ---(A)
And ∠1 = ∠2 because they are corresponding angles.
∠1 = ∠2 = 65°
Putting this value in (A)
⇒65°+ a° = 180°
⇒a° = 180°-65°
⇒a° = 115°
∠3+ 109° = 180°(since sum of linear pairs is 180°) ---(B)
⇒∠3 = 180°-109°
⇒∠3 = 71°
Now, ∠3 = b° (because they are corresponding angles and corresponding angles are equal)
⇒∠3= b°= 71°
Thus Option A is correct : . a=115, b=71
Answer:
Scalene Triangle
Step-by-step explanation:
Measure the side and if the none of the sides are equal then it will be a scalene triangle
Answer:
B. 171
Step-by-step explanation:
Range= difference between highest and lowest number. 9-1=8. Range is 8
Mode = number that occurs the most. 3 occurs once, 4 occurs 5 times, nine occurs once, and 1 occurs twice. Thus, the mode is 4
Answer:
8
Step-by-step explanation: