Answer:
<em>41 degrees</em>
Step-by-step explanation:
<em>According to Angle Sum Property, the sum of the internal angles of a triangle is equal to 180 degrees.</em>
<em>Therefore,</em>
<em>52 + 87 + ? = 180</em>
<em>139 + ? = 180</em>
<em>? = 180 - 139</em>
<em>? = 41 degrees</em>
Hopes this helps:
Answer: 16b+ 72c+72+e
(17b- b) + (82c- 10c) + (90- 18) + e
Answer: angle BCD = 38 degrees
This is because angle ABC and angle BCD are alternate interior angles.
Alternate interior angles are congruent when we have parallel lines.
