# Polygons

## By MathPlanetVideos

Determine whether the figures are polygons or not

# Similar Polygons

## By APUS07

YouTube presents Similar Polygons, an educational video resource on math.

# number of triangles from polygons

A brief video detailing the the number of triangles from polygon

# 10.7 Inscribed and Circumscribed Polygons (Practice)

## By AutenMath

10.7 Inscribed and Circumscribed Polygons (Practice)

# 10.7 Inscribed and Circumscribed Polygons (Lesson)

## By AutenMath

This video offers a lesson on polygons inscribed in and circumscribed about a circle.

# Types of Polygons - MathHelp.com - Geometry Help

## By yourteachermathhelp

Students learn the definition of a polygon as well as the definitions of concave and convex polygons. Students also learn the following polygon classifications: triangle (3 sides) quadrilateral (4 sides) pentagon (5 sides) hexagon (6 sides) heptagon (7 sides) octagon (8 sides) nonagon (9 sides) decagon (10 sides) dodecagon (12 sides).

# Polygons

## By MathPlanetVideos

Find the ratio between the two similar figures

A polygon is any 2-dimensional shape formed with straight lines. Triangles, quadrilaterals, pentagons, and hexagons are all examples of polygons.

## By MathPlanetVideos

Find the measures of angles of these figures

# Inscribed angles and polygons

## By MathPlanetVideos

Find the value of the angle x in the figure.

# 4th Grade Spatial Reasoning with Polygons

## By

4th grade math lesson on spatial reasoning with polygons, aligned to MA Curriculum Framework Standard 4.OA.5.

# Constructing polygon on the coordinate plane example

In this example we are given the coordinates of the vertices and asked to construct the resulting polygon (specifically a quadrilateral). This is fun!

# How to Find the Measure of an Internal Angle in a Regular Polygon

## By Davitily

Davitly presents How to Find the Measure of an Internal Angle in a Regular Polygon an educational video resources on math.

# 12: Duality for polygons and the Fundamental Theorem of Algebra

## By UNSWelearning

This is a video lecture course on Algebraic Topology by Prof. N J Wildberger of the School of Mathematics and Statistics, The University Of New South Wales, Australia. It features a visual approach to the subject that stresses the importance of familiarity with specific examples. It also introduces rational curvature, a simple but important innovation.......

# Sum of Interior Angles of a Polygon | MathHelp.com

## By MathHelp.com

MathHelp.com offers custom math classes for middle school, high school, college, standardized test prep, and homeschool. Every online lesson features videos, interactive practice, self-tests, and more.

# COMPASS Math Test Prep | MathHelp.com

## By MathHelp.com

This lesson covers the sum of the interior angles of a polygon. Students learn the definitions of vertices and diagonals of polygons. Students also learn the following formulas related to convex polygons. The sum of the measures of the interior angles of a polygon is always 180(n -- 2) degrees, where n represents the number of sides of the polygon. The sum of the measures of the exterior angles of a polygon is always 360 degrees. Students are then asked to solve problems using these formulas.