38 Videos for "congruent angles"

Cyclic Quadrilaterals and Parallel Lines in Circles  Concept
Math › Geometry › Circles
How to prove that opposite angles in a cyclic quadrilateral are congruent; how to prove that parallel lines create congruent arcs in a circle. 
Rhombus Properties  Problem 2
Math › Geometry › Polygons
How to find the length of diagonals and angles in a rhombus. 
Rhombus Properties  Problem 1
Math › Geometry › Polygons
How to find the angles in a rhombus created by drawing one diagonal. 
Similar Triangles  Concept
Math › PreAlgebra › Introductory Geometry
Overview of similarity: congruent angles, proportional corresponding sides 
Rectangle and Square Properties  Problem 1
Math › Geometry › Polygons
How to find the angles in a square created by drawing diagonals, and finding the lengths of those diagonals. 
Radii to Tangents  Problem 2
Math › Geometry › Circles
How to calculate the measure of a missing angle in a quadrilateral formed by two circles that are tangent but not congruent and their radii drawn to a common line of tangency. 
Rhombus Properties  Concept
Math › Geometry › Polygons
How to define a rhombus and compare it to a square and rectangle. 
Rectangle and Square Properties  Concept
Math › Geometry › Polygons
How to define a rectangle and a square. 
Rectangle and Square Properties  Problem 2
Math › Geometry › Polygons
How to find the point of intersection of the diagonals of a rectangle in a coordinate plane. 
SSS and SAS  Problem 4
Math › Geometry › Triangles
How to use SAS and SSS to determine which triangles are congruent and correctly denote the congruence. 
Equiangular Polygon Sums  Concept
Math › Geometry › Polygons
How to find the measure of one angle in any equiangular or regular polygon. 
Equiangular Polygon Sums  Problem 2
Math › Geometry › Polygons
How to find the number of sides in an equiangular polygon given the measure of one angle. 
Equiangular Polygon Sums  Problem 1
Math › Geometry › Polygons
How to find the measure of one angle in a regular nonagon. 
SSS and SAS  Problem 3
Math › Geometry › Triangles
How to determine if two triangles are congruent by either SSS or SAS. 
Equiangular Polygon Sums  Problem 3
Math › Geometry › Polygons
How to find the measure of angles in regular polygons that share sides. 
Tangent Segments to a Circle  Problem 2
Math › Geometry › Circles
How to find the measure of an angle formed by a chord drawn between two points of tangency. 
Parts of a Circle  Problem 1
Math › Geometry › Geometry Building Blocks
How to classify arcs and define chords and tangents. 
Parts of a Circle  Concept
Math › Geometry › Geometry Building Blocks
How to define a circle and identify its main parts.