The measure of the Angle RST = 51°
What is the measure of the angle RST?
The angle RST is given as (8x + 11)°
Also angle RST = 78 + (3x - 12)°
Solving for x:
(8x + 11)° = 78 + (3x - 12)°
8x - 3x = 78 - 12 - 11
5x = 55°
x = 55/11
x = 5°
Therefore, the angle RST = (8 * 5 + 11)°
Angle RST = 51°
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