http://www.ck12.org Chapter 8. Right Triangle Trigonometry
b. What is a possible length of the third side to make the triangle acute?
c. What is a possible length of the third side to make the triangle obtuse?- The lengths of the sides of a triangle are 8x, 15 x,and 17x. Determine if the triangle is acute, right, or obtuse.
Determine if the following triangles are acute, right or obtuse.
- 5, 12, 15
- 13, 84, 85
- 20, 20, 24
- 35, 40, 51
- 39, 80, 89
- 20, 21, 38
- 48, 55, 76
Graph each set of points and determine if 4 ABCis acute, right, or obtuse.
21.A( 3 ,− 5 ),B(− 5 ,− 8 ),C(− 2 , 7 )
22.A( 5 , 3 ),B( 2 ,− 7 ),C(− 1 , 5 )
23.WritingExplain the two different ways you can show that a triangle in the coordinate plane is a right triangle.