Given: line segment ab≅line segment bc
prove: the base angles of an isosceles triangle are congruent.
the two-column proof with missing statement proves the base angles of an isosceles triangle are congruent.
statement reason
1. segment bd is an angle bisector of ∠abc. 1. by construction
2. ∠abd ≅ ∠cbd 2. definition of an angle bisector
3. segment bd ≅ segment bd 3. reflexive property
4. 4. side-angle-side (sas) postulate
5. ∠bac ≅ ∠bca 5. cpctc
which statement can be used to fill in the numbered blank space?
a. δdab ≅ δdbc
b. δabd ≅ δabc
c. δabc ≅ δcbd
d. δabd ≅ δcbd

In the given two column proof two sides and included angles are equal.

Triangles are congruent if any pair of corresponding sides and their included angles are equal in both triangles .In the figure sides BD≅BD , AB≅ BC and <ABD ≅,BDD Therefore triangle ABD and triangle CBD are congruent by SAS property of congruence.

The correct  option for missing statement is D. ΔABD ≅ ΔCBD .

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0