Which statements are true? Select each correct answer.

1. All triangles have one right angle.
2. Only some triangles are polygons.
3 .All triangles have 3 angles.
4. All triangles have 3 straight sides.
5 All triangles are plane figures.

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7