The area of a triangle is .5 x base x height
One trillion four hundred billion
Answer:
r = -6
Step-by-step explanation:
6(r - 8) = 8r - 36
distribute 6 into r - 8
6r - 48 = 8r - 36
add 36 to both sides
6r - 12 = 8r
subtract 6r from both sides
-12 = 2r
divide by 2 on both sides
-6 = r
4 equal sides, 4 right angles, 2 pairs of parallel and opposit sides I think
