http://www.ck12.org Chapter 4. Triangles and Congruence
- Is 4 ABCisosceles? Explain your reasoning.
- 4 EQGis an equilateral triangle. IfEUbisects^6 LEQ, find:
a.m^6 EU L
b.m^6 U EL
c.m^6 ELQ
d. IfEQ=4, findLU.Determine if the following statements are ALWAYS, SOMETIMES, or NEVER true. Explain your reasoning.
- Base angles of an isosceles triangle are congruent.
- Base angles of an isosceles triangle are complementary.
- Base angles of an isosceles triangle can be equal to the vertex angle.
- Base angles of an isosceles triangle can be right angles.
- Base angles of an isosceles triangle are acute.
- In the diagram below,l 1 ||l 2. Find all of the lettered angles.