Answer:
270°
Step-by-step explanation:
(x , y) --> (y, -x)
90° clockwise rotation
270° anti-clockwise rotation
Answer:
this is the anwser
Step-by-step explanation:
4 12 13 triangle
Obtuse scalene triangle.
Sides: a = 4 b = 12 c = 13
Area: T = 23.894
Perimeter: p = 29
Semiperimeter: s = 14.5
Angle ∠ A = α = 17.839° = 17°50'19″ = 0.311 rad
Angle ∠ B = β = 66.782° = 66°46'55″ = 1.166 rad
Angle ∠ C = γ = 95.379° = 95°22'46″ = 1.665 rad
Height: ha = 11.947
Height: hb = 3.982
Height: hc = 3.676
Median: ma = 12.349
Median: mb = 7.517
Median: mc = 6.144
Inradius: r = 1.648
Circumradius: R = 6.529
Vertex coordinates: A[13; 0] B[0; 0] C[1.577; 3.676]
Centroid: CG[4.859; 1.225]
Coordinates of the circumscribed circle: U[6.5; -0.612]
Coordinates of the inscribed circle: I[2.5; 1.648]
Exterior (or external, outer) angles of the triangle:
∠ A' = α' = 162.161° = 162°9'41″ = 0.311 rad
∠ B' = β' = 113.218° = 113°13'5″ = 1.166 rad
Step-by-step explanation:
Draw a picture of the tetrahedron. Pick a point K on the line AB, then draw a triangular plane connecting the points K, C, and D.
The intersection of plane KCD and plane ABC is the line KC.
The intersection of plane KCD and plane ABD is the line KD.
The intersection of plane KCD and plane ACD is the line CD.
The intersection of plane KCD and plane BCD is the line CD.
Answer:
44cm
Step-by-step explanation:
Formula of circumference of circle: C = 2πr
Since C = 88π
⇒ 88π = 2πr
⇒ r = 88π/2π
⇒ r = 44cm
