mathleaks.com mathleaks.com Start chapters home Start History history History expand_more
{{ item.displayTitle }}
navigate_next
No history yet!
Progress & Statistics equalizer Progress expand_more
Student
navigate_next
Teacher
navigate_next
Expand menu menu_open Minimize
{{ filterOption.label }}
{{ item.displayTitle }}
{{ item.subject.displayTitle }}
arrow_forward
No results
{{ searchError }}
search
menu_open home
{{ courseTrack.displayTitle }}
{{ statistics.percent }}% Sign in to view progress
{{ printedBook.courseTrack.name }} {{ printedBook.name }}
search Use offline Tools apps
Login account_circle menu_open

Describing Angles

Describing Angles 1.8 - Solution

arrow_back Return to Describing Angles

Vertical angles are formed by two intersecting lines, so we should look for intersecting lines on the diagram. One possibility, along with the corresponding vertical angle pairs, is highlighted on the diagram below.

It appears that is acute, but can this be guaranteed based on the information given on the diagram? Notice that the marker at indicates that is perpendicular to

This perpendicularity means that triangle is a right triangle, so it can be assumed that is acute. Hence, and are two acute vertical angles.