Third side = sqrt(10^2 + 10^2) = sqrt(100 + 100) = sqrt(200) = sqrt(2) x 10
yes
An obtuse triangle must have two acute angles and these can be congruent.
No.
alot
It is a rhombus that fits the given description.
no
acute
yes
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.
Parallelograms normally have 2 congruent obtuse angles and 2 congruent acute angles that altogether add up to 360 degrees
An obtuse triangle must have two acute angles and these can be congruent.
alot
No.
Congruent.
It is a rhombus that fits the given description.
yes there similar
Its sides are congruent but not its angles because it has 2 equal opposite acute angles and 2 equal opposite obtuse angles.