4 years ago

Is it possible for a quadrilateral to have only 2 right angles

2 answers:

8 0

A quadrilateral is a square if and only if it is both a rhombus and a rectangle (four equal sides and four equal angles). So, I would think that no, they can't have 2 right angles.

snow_tiger [21]4 years ago

6 0

Yes. An example of this would be a right angled trapezoid

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BigorU [14]

Answer:

Draw a perpendicular line from point A to line segment BC. Name the intersection of said line at BC “E.” You now have a right angled triangle AED.

Now, you know AD = 6 m. Next, given that the trapezoid is a normal one, you know that the midpoints of AB and DC coincide. Therefore, you can find the length of DE like so, DE = (20–14)/2 = 3 m.

Next, we will use the cosign trigonometric function. We know, cos() = adjacent / hypotenuse. Hence, cosx = 3/6 = 1/2. Looking it up on a trigonometric table we know, cos(60 degrees) = 1/2. Therefore, x = 60 degrees.

Alternatively, you could simply use the Theorem for normal trapezoids that states that the base angles will be 60 degrees. Hope this helps!

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3 years ago

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Sonja [21]

Where’s the equation?

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3 years ago

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Lorico [155]

90/18=5. Hope this helps

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