A right-angle triangle.
a Pentagon is five sided and CAN have 3 right angles.
that is a square with a triangle inside turned
A seven sided shape is a heptagon.
A kite shape
You can make a four sided shape with 3 right angles, but it must have another right angle, too. So technically, yes.
A right-angle triangle.
No because the interior angles of a four sided shape can't exceed 360 degrees.
A three sided shape is a triangle but the given angles are incorrect because a triangle can't possibly have a right angle and an obtuse angle because its 3 interior angles must add up to 180 degrees.
A triangle is a 3 sided shape. There are a few types, Isosceles, Scalene (Acute and Obtuse), Equilateral and the Right angle triangle.
a Pentagon is five sided and CAN have 3 right angles.
that is a square with a triangle inside turned
The 3 interior angles of a triangle add up to 180 degrees
A right scalene triangle.
A 3-sided shape with 1 pair of perpendicular lines is called a right triangle. In a right triangle, one of the angles is a right angle, which means it measures 90 degrees. The side opposite the right angle is called the hypotenuse, while the other two sides are called the legs. The perpendicular lines in a right triangle are formed by the legs meeting at a right angle.
A irregular hexagon
A heptagon.