Question

4. These quadrilaterals were convex. What would happen if the
quadrilateral is not convex? Consider quadrilateral ABCD. Split it
into two triangles and find the sum of the interior angles (Fig3.7).​

Answer 1

Answer:

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The total measure of the three angles of a triangle is 180 degrees.

There are two triangles in the quadrilateral,then 180 + 180 or

180 *2 =360 degrees.

Thus, the measure of the interior angles of the quadrilateral is 360 degrees..

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Answer 2

Answer:

If we split it into two triangles then the total measure of a triangle is 180 degrees

here we have two triangles then 180+180 = 360

Thus, the sum of the interior angles is 360 degrees

Step-by-step explanation:

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