3rd Grade Math 12.5, Classify Quadrilaterals

We can use sides and angles to help us classify quadrilaterals. All quadrilaterals are polygons with 4 sides and 4 angles. Quadrilaterals have special names if their sides are parallel, perpendicular, or have equal lengths. A square has two pairs of opposite sides that are parallel, 4 equal side lengths, and 4 perpendicular angles. A rectangle has two pairs of opposite sides that are parallel, two pairs of sides of equal length, and 4 perpendicular angles. A rhombus has two pairs of opposite sides that are parallel, and 4 equal side lengths. A trapezoid is any quadrilateral that has at least one pair of opposite sides that are parallel. Some quadrilaterals cannot be classified as a square, rectangle, rhombus, or trapezoid. We identify which shapes are quadrilaterals, squares, rectangles, rhombuses, or trapezoids. We compare and contrast different shapes to see if they are polygons, quadrilaterals, or can be identified as a rhombus. 3rd Grade Math 12.3, Identify Polygons https://youtu.be/FvVDhIQN9E4 3rd Grade Math 12.4, Describe Sides of Polygons https://youtu.be/Hh8fMHugrW8 3rd Grade Math Playlist (2015) https://www.youtube.com/playlist?list=PLKi4WTp6PRGVPton7wjphpYAhdTjnJsw0 I'm using the Houghton Mifflin Go Math! 2015 copyright textbook for this playlist. You can practice online using the textbook's website https://www.gomathacademy.com/ FOLLOW ME: TWITTER https://twitter.com/JoannsSchool FACEBOOK https://www.facebook.com/JoAnnsSchool/ MINDS https://www.Minds.com/joannsschool SUPPORT MY WORK: PATREON https://www.patreon.com/JoannsSchool PAYPAL https://www.paypal.me/JoAnnsSchool YOUTUBE FAN FUNDING on my channel Home page https://www.youtube.com/channel/UCAZKtYcE5Jgd6hVL-RHv6Vw