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Is every quadrilateral with at least 1 right angle also a rectangle?
Diyashroff
No, as the sum of all other 3 sides plus the first has to equal 360 degrees but does not mean all other 3 sides have to be 90 degrees exactly. IE one could be 89 degrees, the other 91 degrees and the other 90 degrees.
so the answer is false
Wiki User
∙ 13y ago
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Is a quadrilateral with at least one right angle and congruent diagonals a rectangle?
Yes
Does quadrilateral have at least one pair of consecutive supplementary angle?
No.
Which quadrilaterals have two obtuse angles?
Every parallelogram and most trapezoids have.Oh wait! It seems to me that every quadrilateral, regular or irregular, that'snot a rectangle and not concave, must have at least two obtuse angles.
What geometric shapes have acute angles?
Any irregular polygon can have an acute angle. A regular triangle (equilateral) has three acute angles. All other triangles must have at least two acute angles. A quadrilateral, other than a rectangle (or square), must have at least one.
What description guarantees that a quadrilateral is a rectangle?
A plane figure with four sides and at least three right angles. There are other descriptions.
Is a quadrilateral with at least one right angle and congruent diagonals a rectangle?
Yes
Is it possible to draw a quadrilateral that is not a rectangle but has at least one right angle?
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What shape has 4 sides but only 1 right angle?
It could be a kite, an arrowhead or an irregular quadrilateral with a right angle - which has no specific name.
What is a quadrilateral that is not a rectangle?
Any quadrilateral in which at least one (and therefore at least two) angles are not right angles is not a rectangle. The majority of these do not have a specific name.
Is quadrilateral with at least three right angles is a rectangle?
if a quadrilateral has three right angles will also have have a fourth right angle. Making it a rectangle. The addition of all the angles in a triangle is 360 degrees. If there are three right angles, and you subtract their addition by 360, you will get ninty degrees.
Does quadrilateral have at least one pair of consecutive supplementary angle?
No.
Which type of quadrilateral always has at least three congruent angles?
A rectangle or a square.
Is a rhombus acute?
No. Except for the case of a square (a special case of rhombus), a rhombus will have 2 congruent acute angles, and 2 congruent obtuse angles. The square has 4 right angles. In fact, every quadrilateral will have either all 4 angles equal to right angle (square and rectangle), or will have at least 1 obtuse angle (also at least 1 acute).
Is it true or false that every parallelogram with at least one right angle is a rectangle?
TRUE.A rectangle is by definition a parallelogram. A parallelogram is a quadrilateral with 2 pairs of parallel lines. A rectangle is a parallelogram with 4 equal angles which are 360o/4 = 90o.The opposite angles of a parallelogram are equal as well. Therefore the following is true.If one angle is equal to 90o then the opposite angle is 90o. That leaves two angles and 180o. Since the two angles left are equal then they are each 180o/2 which is also 90o.
Which quadrilaterals have two obtuse angles?
Every parallelogram and most trapezoids have.Oh wait! It seems to me that every quadrilateral, regular or irregular, that'snot a rectangle and not concave, must have at least two obtuse angles.
Is at least on angle on any quadralladeral 90?
Yes. The sum of the internal angles of every quadrilateral is 360 degrees, so either all angles are 90 degrees or at least one must be.
Which of these figures must be a rectangle?
A parallelogram with at least one right angle
