D
An acute angle is less than 90 degrees
Answer:
all work is shown and pictured
Answer:
The measure of the fourth angle = 137.1°
Step-by-step explanation:
Let x = the measure of the fourth angle
Sum of all 4 interior angles in a quadrilateral equal 360°
so
x + 23.5° + 99° + 100.4° = 360°
x + 222.9° = 360°
x = 360° - 222.9°
x = 137.1°
Answer:
wait, it only 25 points...
Step-by-step explanation:
A cube because it has 6 faces/sides and 12 edges.