Answer:
C) Mapping
Step-by-step explanation:
Sum of all interior angles on a polygon is
180( n - 2) n = number of sides in the polygon.
now, this one is is a 21-gon, thus the sum is 180( 21 - 2).
Answer:because it shows how the shape on the right is the same as the one on the left, just after being enlarged
Step-by-step explanation:
Das is disguised pythagorean theorme
the height is one leg
the distance from house is other leg
length of ladder=hyptoonuse
so
remmeber
if legs of right triangle are a and b and hyptonuse is c then
a²+b²=c²
so
legs are 15 and 20
15²+20²=c²
225+400=c²
625=c²
sqrt both sides
25=c
25ft is length of laddder
Answer:
B
Step-by-step explanation:
10 + 9 = 19