Unit 3.1B: Properties
Tamaya conley
Start at the 148. Find the angle adjacent (next to) the 148. Then
find the other part of the right angle. Keep working around until
you can get to .

To find the angle adjacent to the 148°, you’ll want to remember that the angles in a right angle add up to 90°. So, subtract 148° from 90° to find the adjacent angle: 90° - 148° = -58°. Since angles can’t be negative in this context, make sure you’re looking at the right angles’ positions. Now, if this leads you to a setup involving external angles or adjacent angles in triangles, keep working that around until you have a full understanding.

Next, we can layout our knowledge about angles systematically! Keep in mind that when you break down angles in a triangle (or around a point), you’ll eventually find that the sum of angles in a triangle is 180°, and opposite angles are equal. So whether you’re dealing with supplementary or complementary angles, keep your calculations organized in a way that leads directly to solving for . Happy angle hunting!