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Welcome to the Guaranteach Geometry Resource page!

Here you can get access to some of our best Geometry videos! Scroll down or pick a category below to find dozens of short video lessons available immediately. Please create an account to view these lessons.
 
What kind of Geometry help do you need?
 
  Introduction to Dimensions (10 lessons, 77 videos)
  Angles (14 lessons, 127 videos)
  Quadrilaterals (16 lessons, 98 videos)
  Polygons (13 lessons, 85 videos)
 
 Introduction to Dimensions (10 lessons, 77 videos)

Introduction to Points
 (8 videos)

Play
In this lesson, the definition, rules pertaining to, and purpose of a point will be addressed. This will aide you in working with lines. (1:38)
One Dimension
 (7 videos)

Play
This lesson will discuss the definition, depiction, and location of one dimensional objects. It could be adventageos to have some experience with length, width, height, and zero dimensional objects. (1:26)
Two Dimensions
 (7 videos)

Play
This lesson will explore the definition, depiction, and location of three dimensional objects. It could help you to have some experience with zero and one dimensional objects. (1:19)
Three Dimensions
 (9 videos)

Play
In this lesson, you'll learn the definition, depiction, and perceptions in a other dimensions of three dimensions. Having some familiarity with zero, one, and two dimensions can help you with this lesson. (1:41)
 
Other lessons in this section: Introduction to Lines (9 videos) , Introduction to Planes (7 videos) , Zero Dimensions (7 videos) , Four Dimensions (7 videos) , Relationships Between Dimensions (6 videos) , Introduction to Dimensions Worksheet (10 videos)
 Angles (14 lessons, 127 videos)

Obtuse Angles
 (7 videos)

Play
This lesson explores the definition and degree measure of obtuse angles. Having some knowledge of angles, degrees, and intersecting lines could help you succeed with this lesson. (2:12)
Acute Angles
 (10 videos)

Play
During this lesson, you'll learn the definition and measures for acute angles. Some understanding of angles, degrees and intersecting lines would be helpful. (1:29)
Right Angles
 (11 videos)

Play
In this lesson, you'll learn the definition, components, and notation of right angles. To get the most from this lesson, you should have some experience with degrees and lines. (2:18)
Common Angle Measures
 (6 videos)

Play
Following this lesson, you'll be able to pinpoint angles that are commonly found in geometric shapes. It might help to have some experience with right, straight, and full angles and their degree measures. (4:47)
 
Other lessons in this section: Introduction to Angles (7 videos) , Angle Notation and Labeling (8 videos) , Angles Terms of Measurement (6 videos) , Identifying a Right Angle (10 videos) , Identifying an Obtuse Angle (10 videos) , Identifying an Acute Angle (10 videos) , Identifying a Right Angle in Context (11 videos) , Identifying an Acute Angle in Context (11 videos) , Identifying an Obtuse Angle in Context (10 videos) , Visual Measurement of Angles (10 videos)
 Quadrilaterals (16 lessons, 98 videos)

Interior Angles of a Quadrilateral
 (5 videos)

Play
This lesson discusses how the sum of the interior angles is equal to 360° or 2π radians. This lesson will help you when calculating unknown angle values in a quadrialateral. (3:01)
The Diagonal of a Square
 (6 videos)

Play
During this lesson, you'll learn that when one diagonal is drawn in a square, two congruent 45-45-90 triangles are formed. Familiarity with squares and angle measures would assist you with this lesson. (1:54)
Rhombus
 (6 videos)

Play
This lesson explains the definition, components, and notations involved in a rhombus. Some familiarity with sides, angles, and symmetry prior to working with this lesson. (2:16)
Irregular Quadrilaterals
 (6 videos)

Play
In this lesson, you'll learn about the definition, components, and notations involved in an irregular quadrilateral. Some familiarity with sides, angles, and parallel lines prior to working with this lesson. (1:37)
 
Other lessons in this section: Introduction to Quadrilaterals (6 videos) , Determining the Missing Angle of a Quadrilateral (10 videos) , The Diagonal of a Parallelogram (5 videos) , The Diagonal of a Rectangle (5 videos) , Double Diagonals of a Parallelogram (5 videos) , Double Diagonals of a Rectangle (5 videos) , Square (8 videos) , Rectangle (6 videos) , Parallelogram (7 videos) , Trapezoid (7 videos) , Double Diagonals of a Square (5 videos) , Median Line of a Trapezoid (6 videos)
 Polygons (13 lessons, 85 videos)

Polygons
 (5 videos)

Play
This lesson will provide you with the definition, rules and types of polygons. This lesson will help you when working with various geometric shapes. (3:08)
Sum of Interior Angles in a Polygon
 (7 videos)

Play
Discussed in this lesson is the formula for finding the sum of the degree measures of the interior angles of any polygon and how to apply it to any given polygon. It may be adventageous to have some understanding of polygons and angle measures prior to th (2:10)
Regular and Irregular Polygons
 (6 videos)

Play
Following this lesson, you'll be able to distinguish between regular and irregular polygons based on their individual characteristics. It may assist you to have some understanding of polygons, vertices, and symmetry prior to this lesson. (2:17)
The Area of a Regular Polygon
 (5 videos)

Play
This lesson explores the formula and procedure involved in finding the area of a regular polygon. You will gain the most from this lesson having some prior knowledge of polygons and area. (2:35)
 
Other lessons in this section: Regular Pentagon (5 videos) , Regular Hexagon (5 videos) , Calculating Angles of a Regular Polygon (10 videos) , Regular Octagon (7 videos) , Perimeter of Regular Polygons (7 videos) , Perimeter of Irregular Polygons (5 videos) , The Exterior Angles of a Polygon (6 videos) , Sum of the Exterior Angles of a Polygon (6 videos) , Solving for the Missing Angle of a Polygon (11 videos)
 
 
 
  Practice Worksheets

  
  Sometimes doing is the best way to learn. Find practice worksheets below with videos of step-by-step explanations & solutions.

  
 
PRACTICE WITH QUADRILATERALS.PDF
Answer 1 Answer 2 Answer 3 Answer 4 Answer 5 Answer 6 Answer 7 Answer 8 Answer 9 Answer 10
PRACTICE WITH LINES.PDF
Answer 1 Answer 2 Answer 3 Answer 4 Answer 5 Answer 6 Answer 7 Answer 8 Answer 9 Answer 10
 
 
 
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