Answer:
60° : 75° : 120° : 105°
Step-by-step explanation:
I like to work these by considering the relationship between a "ratio unit" and the angle it represents. Here, the sum of ratio units is 4+5+8+7 = 24. The sum of angles in a quadrilateral is 360°, so each ratio unit must stand for ...
360°/24 = 15°
Multiplying the ratio units by this value, we find the angles to be ...
(4 : 5 : 8 : 7) × 15° = 60° : 75° : 120° : 105°
Point D is obviously on both lines.
Answer:
32,29
Step-by-step explanation:
Answer:
rest of the question plz
Step-by-step explanation:
Answer: 27.89905693 units²
Step-by-step explanation:
First divide the shape into smaller pieces, then find the area of these pieces and then add them up to get the area of the whole shape.
Area of first triangle = 1/2×2×2 = 2
Area of second triangle = 1/2×2×5 = 5
Area of square = 2×2 = 4
Summing up the smaller sides of the shape, we obtain a larger triangle with sides 3.5 and a base of 9. Thus we find the longest/hypotenuse side by applying the Pythagoras Theorem
√((3.5)² + 9²) = √93.25
Area of large triangle = 1/2×3.5×√93.25 = 16.89905693
Add up the areas to find the area of the shape = 16.89905693+5+4+2 = 27.89905693