1. 
If OA = 5, then OG = ______.



3. 
A baseball diamond is in the shape of a square, with the distance between consecutive bases of 90 feet. The second baseman wants to make an out at home plate. How far must he throw the ball? 

4. 
In _{}ABC, the ratio of AB:BC:CA = 1:2:_{}. Find the measure of _{}A. 

5. 
In right triangle ABC, the length of leg BC is 20. If the area of the triangle is 600, find the measure of _{}A. 

6. 
In _{}ABC, m_{}A = 30 and m_{}C = 90. If BC = 5, find the ratio BC to AB. 

7. 
The diagonals of a rectangle are 40 cm long and intersect at a 120 angle. Find the dimensions of the rectangle. 

8. 
In _{}ABC, m_{}A = 30 and m_{}C = 90. If BC = 5x  33 and AB = 4x  18, find the lengths of all three sides. 
