The answer is D because the opposite sides are equal to each other, so you have 2 of each measurement. Also, midsegments divide each side of the bigger triangle in half. So 2 (1/2AC + 1/2AB)= the perimeter of the quadrilateral but the 2 in front will cancel out both halves, so we are left with AC+AB (OPTION D)
Answer:
40° and 9°
Step-by-step explanation:
The sum of the exterior angles of a polygon = 360°
If the polygon is regular then the measure of each exterior angle is
← where n is the number of sides
(a) for a regular 9 sided polygon
exterior angle =
= 40°
(b) for a regular 40 sided polygon
exterior angle =
= 9°
D/2=r
12/2=6
a=pir^2
a=pi6^2
a=36pi
a=113.04
3rd option again