Which equation is correct regarding the measure of 21?
OmZ1 =
1 = {(a-c)
O m_1 = {(a + c)
O m_1 = {(6-0)
= {(b + c)
Om21 =

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Which of the following circles have their centers in the third quadrant? check all that apply.

What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3