<ABC + <CBD = <ABD
substitute <ABD = 85 and <CBD = x
<ABC + x = 85
Answer:
540°
Step-by-step explanation:
Formula: note that n means nr of sides
(n-2)×180°
(5-2)×180°=3×180=540°
Where each angle are 540°÷5=108°
Answer:
x= 105
y= 40
Step-by-step explanation:
3y=4y-40 because they are alternate interior
Solve for y.
y=40
4y-40=x+15 because they are vertical angles.
Substitute 40 in for y.
4(40)-40=x+15
Solve.
x=105
Answer:
1176
Step-by-step explanation:
12 times 7 equals 84.84 times 14 is 1176
