yes
An obtuse triangle must have two acute angles and these can be congruent.
it is a rhombus
It is a rhombus
Not true because supplementary angles add up to 180 degrees and two acute angles would be less than 180 degrees.
A parallelogram is a quadrilateral with opposite sides parallel and congruent.
acute
An obtuse triangle must have two acute angles and these can be congruent.
it is a rhombus
yes there similar
A parallelogram
It is a rhombus
no
Not true because supplementary angles add up to 180 degrees and two acute angles would be less than 180 degrees.
Yes, you have two congruent angles in each triangle, one right and one acute so the third angles must be equal also.
By Definition, a triangle with two Congruent Sides is an Isosceles Triangle. For ALL angles to be Acute, that is, LESS than 90o , the two opposite angles must be greater than 45o. Remember that the SUM of the angles in a Triangle must equal 180o.
A parallelogram is a quadrilateral with opposite sides parallel and congruent.
It is a rhombus