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What else can I help you with?
What all angles are less than 90 are obtuse?
False because angles greater than 0 but less than 90 degrees are acute angles
If you cut the corner off a rectangle you are left with a hexagon true or false?
False
Triangle can have more than one obtuse angle?
False, because a triangle can have only 1 obtuse angle
Supplementary angles add to 270 degrees true or false?
False. Supplementary angles add to 180degrees.
True or false a right triangle cannot be an obtuse triangle?
true
A triangle can have two obtuse interior angles true or false?
False
Can both angles in a pair of complementary angles can be obtuse true or false?
yes
Why is this conjecture false 'If two angles are supplementary then one of the angles must be obtuse'?
they could both be right angles
If a triangle has an obtuse angle the in cannot be an triangle?
False because it can have 1 obtuse angle and 2 acute angles providing that all 3 angles add up to 180 degrees.
What all angles are less than 90 are obtuse?
False because angles greater than 0 but less than 90 degrees are acute angles
If a quadrilateral is a parallelogram then its opposite angles are always supplementary?
False because it will have 2 equal opposite obtuse angles and 2 equal opposite acute angles with the 4 angles adding up to 360 degrees.
What are two obtuse angles supplementary true or false?
no because there are 2 kinds of angels-devil angel-good angel
A triangle with one obtuse angle must have also have two acute angles true or false?
True and all 3 angles must add up to 180 degrees.
The sum of 2 acute angles is always obtuse angles?
I'm not sure I understand your actual question, but what you are actually asking with the wording is false. Two 30 degree angles would both be acute angles whos sum would only create another acute angle of 60 degrees. But if you have 2 acute angles, then the third would have to be obtuse to form a triangle.
Can an angle be both obtuse and isosceles true or false?
False
A rhombus is a square true or false?
False. Every rhombus is a parallelogram, but not every rhombus is a square. Only those that have right angles are squares. Every rhombus is a parallelogram because its diagonal lines are perpendicular, and they bisect an interior angle.
If you cut the corner off a rectangle you are left with a hexagon true or false?
False
