1. the measures, in degrees, of the three angles of a triangle are given by 2x + 1, 3x − 3, and 9x. what is the measure of the smallest angle?  
a  36°
b  117°
c  13°
d  27°
2. keelie has a triangular-shaped card. the lengths of its sides are 3.9 cm, 5.2 cm, and 6.5 cm. is the card a right triangle? (select yes or no ) , the card ( select is not or is ) a right triangle
3. gretchen made a paper cone to hold a gift for a friend. the paper cone was 16 inches high and had a radius of 2 inches. find the volume of the paper cone to the nearest tenth. use 3.14 for π.   the volume of the paper cone is about in3.