wich shaps have right angles
quadrilaterals
Square, Rectangle
a right angled triangle.
No
wich shaps have right angles
Most shapes have no right angles. Circle, pentagon, hexagon etc. Ones that do include the square and some triangles.
A square shape for example has 4 right angles and a right angle is 90 degrees.
Triangles
The diagonals of a square and a rhombus cross at right angles.
Acute angles
squares, right triangles, rectangles
square
A-F
quadrilaterals
Square, Rectangle
a rhombus