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
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.
In general a rhombus has one opposite pair of congruent acute angles and one opposite pair of congruent obtuse angles. A square, however, is a rhombus with four right angles.
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.