Geometry

Given: ∠ABC and ∠CBD are supplementary angles. m∠ABC = 4x + 7, m∠CBD = 2x − 1. Prove: m∠ABC = 123

How do I write this in a two column proof?

  1. 👍
  2. 👎
  3. 👁
  1. 4x+7 + 2x-1=180
    6x=172
    x=28.5
    4x+7=123

    1. 👍
    2. 👎
    👤
    bobpursley
  2. What does angle CBD measure

    1. 👍
    2. 👎
  3. What does angle CBD measure

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Geometry

    1. If RST=NPQ, which of the following is true? A) R=P B) R=Q C) T=P D) T=Q

  2. Math

    ABC has vertices A(0, 6), B(4, 6), and C(1, 3). Sketch a graph of ABC and use it to find the orthocenter of ABC. Then list the steps you took to find the orthocenter, including any necessary points or slopes you had to derive.

  3. geometry

    Algebra BD bisects

  4. geometry

    ray bd bisects angle abc. what are the measures of angles; abd, cbd, and abc? the equations are 3x+6 and 7x-18.

  1. Math

    Write a sequence of transformations that maps triangle ABC onto triangle A''B''C''. --------------------------------------… A in ABC is 1,9, B in ABC is 3,12, and C in ABC is 4,4. A'' in A''B''C'' is 3,-3, B'' in A''B''C'' is

  2. geometry

    1. Triangle ABC has a 63.0-degree angle at B, and side AC is 13.6 cm long. What is the diameter of the circle circumscribed about ABC? 2. And: Given any triangle ABC, with sides a, b, and c opposite angles A, B, and C,

  3. Geometry 10

    Triangle ABC is extended to point D Angle CAB =x+40 Angle ACB = 3x +10 angle CBD = 6x what is measure of angle CAB? I can get angles inside triangle to equal 180 but when I check for the extended point it does not add up to

  4. Geometry

    bd bisects abc. if abd = 2x+50 and cbd = 5x+5, find the value of x

  1. Geometry

    line BD bisects angle ABC. Find angle ABD, angle CBD, and angle ABC if angle ABD equals 3x+6 and angle DBC equals 7x-18 please help it would mean a lot

  2. Math

    Logan drew Δ ABC on the coordinate plane, and then reflected the triangle over the y-axis to form Δ A'B'C'. Which statement is not true about these two triangles? A.Δ ABC≅Δ A'B'C' B. The two triangles have the same angle

  3. Geometry

    Is the following definiiton of supplementary reversible? If yes, write it as a true biconditional. Supplementary angles are two angles whose measures sum to 180. a. Yes, if angles are supplementary, the their measures sum to 180.

  4. math

    BD bisects angle ABC, measure of angle ABC=5x-4, and measure of angle CBD=2x+10 angle ABC is a(n) _ angle

You can view more similar questions or ask a new question.