Answer:
Step-by-step explanation:
Plane shapes in two dimensions (drawn on a flat piece of paper for example) have measurable properties apart from just their physical measurements of side lengths, internal angles and area. They can undergo transformations, whereby they can change position or size, or ‘aspect ratio’ (how tall and thin or short and wide they are).
This page explores congruence, symmetry, reflection, translation and rotation. These concepts are about how a shape’s position changes, relative to a reference, such as a line or a point.
We are faced with these ideas regularly in everyday life, in everything from product design, architecture and engineering, to occurrences in the natural world. Even matching the pattern on a roll of wallpaper involves these geometric ideas.
Congruence
Mathematics is full of complex terminology, but sometimes a complicated term can mean something really simple. This is true for congruence.
Two shapes that are congruent have the same size and the same shape. It’s as simple as that!
In the diagram below, shapes A, B, C and D are all congruent. Shapes E, F, G and H are not congruent.
Read more at: https://www.skillsyouneed.com/num/shape-transformations.html
