Answer:
100°
Step-by-step explanation:
AB = AC (given)
Therefore, ∆ ABC is an isosceles triangle.
m<B=m< C= 40°
sum of the interior angles of a triangle= 180°
m<A+40°+40°=180°
m<A = 180°-80° = 100°
To the left, if it is negative then we move it to the right.
Answer:
Step-by-step explanation:
If the whole length of DEF is given as 7, and segment DE is 2, then segment EF is 7 - 2 = 5
Answer:
C. 
Step-by-step explanation:
Since 40% of the students prefer chocolate ice cream, 60% don't prefer chocolate ice cream. Use this proportion set equal to 25 to find the number of students who prefer vanilla ice cream, instead of chocolate ice cream.