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This page provides a list of educational videos related to Sum of the Angles. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Sum of the Angles.
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.
Sum of all angles in quadrilateral is 360° (Theorem and Proof)
By dostotussigreatho
This is a Math video. This is our third webisode (WB-3) on "Series 8 -- Quadrilaterals". In this video, we learn that sum of all four internal angles in a quadrilateral is 360°. Then we go ahead and prove this theorem.
Complementary Angles | MathHelp.com
By MathHelp.com
MathHelp.com offers comprehensive Algebra 1 help with a personal math teacher. Perfect for homeschool Algebra 1 or for any student who needs lots of Algebra 1 help to get back up to speed in school.
Geometry Basics | MathHelp.com
By MathHelp.com
This lesson covers permutations. Students learn that a permutation is an arrangement of objects in which the order is important. For example, the permutation AB is different than the permutation BA. Students are then asked to solve word problems involving permutations. For example: Find the number of different ways 6 books can be arranged on a shelf. Note that the number of permutations can be found by multiplying the number of choices for the 1st position (6 books) times the number of choices for the second position (5 books), and so on. So the number of permutations is 6 x 5 x 4 x 3 x 2 x 1, or 720. In other words, there are 720 different ways 6 books can be arranged on a shelf.
Finding angle measures 1
By Khan Academy
Figuring out angles in a triangle. A little about exterior angles being the sum of the remote interior angles
Triangle angle example 1 | Angles and intersecting lines | Geometry | Khan Academy
By Khan Academy
Figuring out angles in a triangle. A little about exterior angles being the sum of the remote interior angles
Triangle angle example 1 | Angles and intersecting lines | Geometry | Khan Academy
By Khan Academy
Figuring out angles in a triangle. A little about exterior angles being the sum of the remote interior angles
Finding angle measures 2
By Khan Academy
Sal gives a formal proof that the measures of interior angles of a triangle sum to 180.
Adding and Subtracting Angles: 4.MD.7
By TenmarksAmazon
Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle measures of the parts. Solve addition and subtraction problems to find unknown angles on a diagram in real world and mathematical problems
Acute Triangle - YourTeacher.com - Geometry Help
By yourteachermathhelp
In this lesson students learn to classify triangles as acute (all angles acute) right (one angle right) or obtuse (one angle obtuse). Students also learn that the sum of the measures of the angles of a triangle is 180 degrees and students are asked to use this formula to find the measures of missing angles in given triangles.
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.
Proving the Sum of Measures of Angles in a Triangle are 180
By Khan Academy
This video gives us a walkthrough of the proof that the angle measures of the angles of a triangle add up to 180. This proof requires us to draw in a line on our own (specifically, one that is parallel to one side of the triangle, but it could be any side). Then we can treat the two non-parallel sides as transversals.
7.1 Triangle Application Theorems (Lesson)
By AutenMath
A lesson explaining a.) why the sum of the measures of a triangle equals 180 degrees b.) the relationship between exterior angles and remote interior angles of a triangle and c.) the midline theorem
Properties of a Rhombus | MathHelp.com
By MathHelp.com
This lesson covers evaluating expressions. Students learn to evaluate expressions by substituting the given integers in for the variables in the given expression, then simplifying. Students also learn to use parentheses when substituting.
