Geometry

Question Analysis:

This question involves recognizing pairs of line segments that form an acute angle within a geometric figure. The main focus is on understanding the definition of an acute angle and applying it to the angles formed by different line - segment pairs.

Key Concept Explanation:

An acute angle is an angle that measures less than 90 degrees.

Step - by - Step Solution:

1. Analyze each option:

A.For “Line segments ZT and ZH”: The angle ∠TZH is marked as 45 degrees. Since 45° < 90°,  this pair of line segments forms an acute angle.

B.For “Line Segments NT and ND”: The angle ∠TND is a right angle, indicated by the square corner symbol, so it measures 90 degrees. This pair does not form an acute angle.

C.For “Line Segments DR and DN”: The angle ∠RDN is 108 degrees. Since 108° > 90°, this pair does not form an acute angle.

D.For “Line Segments HR and HZ”: The angle ∠RHZ i...