contestada

ABCD is a quadrilateral.
a) Calculate the value of x.
to
+
D
1380
12x°
b) When ABCD is drawn to scale, would
the lines AD and BC be parallel or not? A
You must justify your answer without
using a scale drawing.
B
Diagram not drawn to scale
+

ABCD is a quadrilateral a Calculate the value of x to D 1380 12x b When ABCD is drawn to scale would the lines AD and BC be parallel or not A You must justify y class=

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Answer:

Step-by-step explanation:

∑ angles = 360°

2x + 90 + x + 3x = 360

6x = 270

x = 45°

:::::

∠A = ∠B, so AD and BC are parallel.

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