Congruent Figures and Isosceles Triangles

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Presentation transcript:

Congruent Figures and Isosceles Triangles Tuesday Oct 16. 2012 Congruent Figures and Isosceles Triangles

Warm-Up 4. Which congruence postulate or theorem proves the triangles are congruent:

HW Check Statements: 2, 3, 1, 4 Reasons: 2, 3, 4, 1 Given, Vertical angles, SAS, CPCTC Given, Corr. Angles congruent, SAS, CPCTC Given, Defn of Midpt, Reflexive, SSS, CPCTC, Defn of angle bisector.

Isosceles Triangles s in which 2 or more sides are

If m<A=4x+2 and m<C=2x+20, Find x.

If m<B=x and m<A=2x+2, Find m<C.

Find the value of x in the regular polygon.

5-1 Midsegments of Triangles

***Midsegment is parallel to the base (side it does not touch)

Midsegment = ½ * base OR Base = 2*Midsegment

Ex:1. H, J, K are midpoints a. What is the midsegment of EG: b. What is the midsegment of FE: c. What is the midsegment of FG:

d.

Ex. 2 Find x:

Ex. 3 Find x:

Ex. 4

We know AE = EB

Homework Complete the worksheet