A rhombus or a trapeze, one of them. I always get them mixed up
There are two equal acute angles. The third angle can be acute, right or obtuse.
two equal acute angles are formed.
Not necessarily. The two equal angles in an isosceles triangle must both be acute angles. If they were right angles or obtuse angles then a triangle could not be formed. If the two equal angles are less than 45° each then the third angle is an obtuse angle. If they are both 45° then the third angle is a right angle and if they are both greater than 45° then the third angle is an acute angle.
A rhombus for example has 2 equal acute and 2 equal obtuse interior angles that add up to 360 degrees
A parallelogram has 2 equal opposite acute angles and 2 equal opposite obtuse angles with its 4 angles adding up to 360 degrees
It is an obtuse triangle having 1 obtuse angle and 2 different acute angles Or it is an isosceles triangle having 1 obtuse angle and 2 equal acute angles
A triangle can have one obtuse angle and two acute angles. The sum of all three angles must equal 180 degrees.
There are two equal acute angles. The third angle can be acute, right or obtuse.
If it has 2 equal acute angles and 1 obtuse angle then it is an isosceles triangle.
Two equal angles are formed.
two equal acute angles are formed.
Not necessarily. The two equal angles in an isosceles triangle must both be acute angles. If they were right angles or obtuse angles then a triangle could not be formed. If the two equal angles are less than 45° each then the third angle is an obtuse angle. If they are both 45° then the third angle is a right angle and if they are both greater than 45° then the third angle is an acute angle.
If the 2 acute angles are equal then it is an isosceles triangle otherwise it is a scalene triangle.
Only when it has 1 obtuse angle and 2 equal acute angles can it be an isosceles triangle.
A rhombus for example has 2 equal acute and 2 equal obtuse interior angles that add up to 360 degrees
A parallelogram has 2 equal opposite acute angles and 2 equal opposite obtuse angles with its 4 angles adding up to 360 degrees
Only when it has 2 equal acute angles and 1 obtuse angle that it is an isosceles triangle