Answer:
One triangle can be constructed.
Step-by-step explanation:
Recap that all the interior angles in a triangle add up to 180. With the given measurements of the angles, 70 plus 80 plus 30 equals 180. Each triangle has the sum of 180 degrees. Therefore, there can only be one triangle that can be constructed. I think you were suppose to put can, not can't. Hope this helps!
Answer:
118.3
Step-by-step explanation:
The formula for the area is a triangle is base*height/2
Area = 18.2*13/2 = 118.3
Answer:
30 or -30
Step-by-step explanation:
y^2 = 900
Take the square root of each side
sqrt(y^2) = sqrt(900)
y = ±30
B. Point F, B, and C are coplanar
In fact, A is wrong, because you can't draw a line passing through D, G, and F
Also, C is wrong because point E is not on the orange plane
For the same reason, D is wrong because line AE seems perpendicular to the plane, but anyway it surely does not lie on the plane