What is a 360 degree angle?

What is a 360 degree angle?

Circumference

The sum of internal angles of trapezoid and parallelogram is 360 degrees______ (judge right or wrong)

Because both parallelogram and trapezoid are quadrilateral, the sum of internal angles of trapezoid and parallelogram is 360 degrees

In trapezoidal ABCD, ad is parallel to BC, and angle a = 2, B = 4, C. calculate the degree of angle D

AD‖BC
Therefore, a + B = 180 degree and C + D = 180 degree
∠A=2∠B
2∠B+∠B=180°
∠B=60°
2∠B=4∠C
∠C=30°
∠C+∠D=180°
Therefore, d = 150 degree

In the trapezoidal ABCD, the angle AD / / BC a = 2, B = 4, C is used to calculate the degree of angle D

Because the parallel line is 180 ° in the same side and the inner corner
So angle a + B = ∠ B + 2 ∠ B = 180
∠B=60°
2∠B=4∠C
Therefore, C = 30
∠D=180-30=150°