Suppose m<3=127 degrees. Find m<1.

m∠1 = 37°

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDASEquality Properties

Geometry

Definition of a Line: A line is 180°All angles in a triangle add up to 180°

Step-by-step explanation:

Step 1: Define

m∠3 = 127°

m∠G = 90°

Step 2: Find m∠2

Set up equation:                    m∠2 + 127 = 180Isolate unknown:                   m∠2 = 53°

Step 3: Find m∠1

Set up equation:                    m∠1 + m∠2 + m∠G = 180Substitute:                              m∠1 + 53 + 90 = 180Combine like terms:              m∠1 + 143 = 180Isolate unknown:                   m∠1 = 37°

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