Search results
Results from the WOW.Com Content Network
Base Angles Theorem. A. Words. If two sides of a triangle are congruent, then the angles opposite them are congruent. Symbols. If AB&* c AC&*, then aC c aB. B. C.
Definitions: An isosceles triangle is a triangle having at least two congruent (of equal length) sides. The two sides are called the legs and the third side is called the base. The point at which the legs meet is the vertex and the angle there is the vertex angle.
In this lesson, we will show you how to easily prove the Base Angles Theorem: that the base angles of an isosceles triangle are congruent.
This worksheet gives them 5 different triangles to classify based on side length (scalene, isosceles, equilateral), classify based on angle measure (acute, right, obtuse), and apply the Triangle Angle Sum Theorem (the sum of the angles of a triangle is 180 degrees).
©W R2R0 Y1p1Y aK FuCtTa n 5Snogf Stw2asr1e A xL 4L eCs.A b bAzlEl6 orwijgdh Ot6sm Ornezs qe qr bvMead r.U b IM hald Veb BwCiVthG zIan if Zi2n3iutYeu oGye1orm oe Rtor vyp. q Worksheet by Kuta Software LLC Kuta Software - Infinite Geometry Name_____ Isosceles and Equilateral Triangles Date_____ Period____
When an isosceles triangle has exactly two congruent sides, these two sides are the legs. The angle formed by the legs is the vertex angle. The third side is the base of the isosceles triangle. The two angles adjacent to the base are called base angles. vertex angle.
When an isosceles triangle has exactly two congruent sides, these two sides are the legs. The third side is the base of the isosceles triangle. The two angles adjacent to the base are called base angles. You can use the theorems given below to fi nd angle measures and side lengths.