# 2 D Shapes, Congruent, Symmetry

### Description

3rd Grade Math Flashcards on 2 D Shapes, Congruent, Symmetry, created by Lynn Rathbun on 05/05/2014.
Flashcards by Lynn Rathbun, updated more than 1 year ago
 Created by Lynn Rathbun over 10 years ago
584
15

## Resource summary

 Question Answer open plane figure open plane figure A plane figure that does not start and end at the same point. closed plane figure A plane figure that starts and ends at the same point. closed plane figure plane figures Plane figures are flat figures. They have length and width. They may be open or closed figures. vertex, vertices A point where two sides of a polygon meet. quadrilaterals Polygons with 4 sides and 4 angles. parallelogram A quadrilateral with two opposite sides that are parallel. Only the opposites sides of a parallelogram need to be equal. parallelogram rhombus A parallelogram with sides that are equal in length. rhombus trapeziod A closed plane figure in which only one pair of opposite sides are parallel. trapezoid congruent Identical figures are congruent. They have the same shape and same size. congruent slide Move a figure in any direction to a new position. slide Image: slide (image/jpg) flip Turn a shape front to back over a line. flip Image: flip (image/png) turn Rotate a figure about a point. turn Image: flip (image/png) not congruent Two figures that are either not the same shape or not the same size. symmetry Occurs when two halves of a figure fit each other exactly when folded along a line. Two halves are mirror images of each other. line of symmetry A line that divides a figure into congruent halves. The halves fit exactly over each other when folded along this line. line of symmetry symmetry Image: symmetry1 (image/jpg)

### Similar

Geometry Formulas
GCSE Maths: Geometry & Measures
GCSE Maths: Understanding Pythagoras' Theorem
Geometry Theorems
Geometry Vocabulary
maths notes
Algebraic & Geometric Proofs
Similar Triangles
Perimeter Check-up
Geometry Quality Core
SAT Math Level 1 overview