Use the formula SA=a+1/2ps
a=area of the base
p= perimeter of the base
s= slant height
Answer:
D. 180 degrees
Step-by-step explanation:
A straight line is 180 degrees.
Answer:
y = 167°
Step-by-step explanation:
The vertex of the triangle = 154° ( alternate angle to 154° )
The triangle has 2 equal legs so is isosceles with 2 base angles congruent
base angle =
=
= 13°
base angle and y are adjacent angles, lie on straight line AB and sum to 180°
y + 13° = 180° ( subtract 13° from both sides )
y = 167°
Answer:
The one you selected is right
Step-by-step explanation: