Question

State whether each sentence is true or false. If false replace the underlined word or number to make a true sentence.

Lines that intersect at acute angles are called perpendicular lines.

Short answer

The provided sentence is false and right should be written in place of acute.

Step-by-step solution

Step 1. Analyze the provided sentence.

The provided sentence represents the name of the lines associated with making an intersection relation between them and their intersection is forming an angle that falls in the category of an acute angle.

Step 2. Determine the provided equation is true or false. 

The provided sentence falls in the category of false because the name of the provided angle is represented by the right angle.

The provided name is associated with an angle having measurement neither equal to $90°$nor greater than $90°$.

Step 3. Write the conclusion. 

The provided sentence is false so the actual word is right.