Question

Given m∠P = 38° and m∠O = 70°, find m∠1.38  72  108  142

Answer 1

Answer:

m∠1 = 72°

Step-by-step explanation:

We know: The sum of the measures of a triangle is 180°.

Therefore we have the equation:

$m\angle P+m\angle O+m\angle 1=180^o$

We have

$m\angle P=38^o,\ m\angle O=70^o$

Substitute:

$38^o+70^o+m\angle 1=180^o$

$108^o+m\angle1=180^o$       subtract 108° from both sides

$m\angle1=72^o$

Answer 2

Answer:

The correct solution is 72