Learn the definitions. Any angle greater than 90º is obtuse. Two angles are congruent if and only if they are equal. For example, 105º ≠ 150º, but both are greater than 90º; therefore, they are not congruent. Obtuse, fersure!
Yes, a rhombus can have both acute and obtuse angles. A rhombus is a quadrilateral with all sides of equal length, but its angles can vary. Since the opposite angles of a rhombus are congruent, if one angle is acute (less than 90 degrees), then the opposite angle will also be acute. Similarly, if one angle is obtuse (greater than 90 degrees), then the opposite angle will also be obtuse.
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).
Because it has five angles it is a irregular pentagon.
A rectangle has no interior obtuse angles.
There are no angles they are all obtuse angles
Not always because 98 degrees and 140 degrees are both obtuse angles that are not congruent but angles 150 degrees and 150 degrees are both obtuse angles that are congruent.
An obtuse triangle must have two acute angles and these can be congruent.
Yes, an obtuse triangle can have two congruent angles, where for the obtuse angle measuring A degrees, each of the two other angles measures (180-A)/2.
no
If it is a 'regular' hexagon, then all angles are congruent, and all are obtuse.
Not always
Parallelograms normally have 2 congruent obtuse angles and 2 congruent acute angles that altogether add up to 360 degrees
Yes, (with 1 exception) all rhombi will have 2 congruent acute angles, and 2 congruent obtuse angles. The 1 exception is if the rhombus is a square, then all angles will be right angles.
It is a rhombus that fits the given description.
An obtuse triangle does not always have three congruent sides. An obtuse triangle can be any form that always has three angles.
Its sides are congruent but not its angles because it has 2 equal opposite acute angles and 2 equal opposite obtuse angles.
An obtuse triangle whose other two angles will be acute angles