Question 10 of 10 Which of the following are examples of acute angles? Choose all that appll. \( \square \begin{array}{l}\square \text { A. The sharpened tip of a pencil } \\ \square \text { B. The comer of a sheet of paper } \\ \square \text { C. A pair of scissors opened as wide as it can go } \\ \square \text { D. The pointed end of a knife } \\ \square \text { E. The edge of a window }\end{array} \)

To determine which of the options represent **acute angles** (angles less than 90 degrees), let's analyze each one: - **A. The sharpened tip of a pencil** - **Acute Angle:** The sharpened tip forms a pointed angle, typically less than 90 degrees. - **B. The corner of a sheet of paper** - **Not Acute:** Standard paper corners are right angles (90 degrees). - **C. A pair of scissors opened as wide as it can go** - **Not Acute:** When fully opened, scissors form an angle greater than 90 degrees (obtuse angle). - **D. The pointed end of a knife** - **Acute Angle:** Similar to the pencil, the pointed end of a knife forms an angle less than 90 degrees. - **E. The edge of a window** - **Not Acute:** Window edges are typically right angles (90 degrees). **Therefore, the examples of acute angles are:** - **A. The sharpened tip of a pencil** - **D. The pointed end of a knife** **Answer:** A and D