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.

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

Answer! if you don’t mind, can you explain

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by