[trig]which of the following are true statements about any regular polygon? check all that apply.

a. its sides are congruent line segments.
b. all of its angles have equal measures.
c. all of its angles measure 90.
d. it is a closed figure.
e. it is a quadrilateral.
f. it is a hexagon.

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Aboard 60 in. long is cut two parts so that the longer piece is 5 times the shorter. what are the length of the two pieces?

There are three grizzly bears in the city zoo. yogi weighs 400.5 pounds, winnie weighs 560.35 pounds, and nyla weighs 628.29 pounds. what is the average weight of the three bears? (hint: what do they weigh all together? ) a. 502.97 pounds c. 604.38 pounds b. 529.71 pounds d. 794.57 pounds