Tutors Answer Your Questions about Geometric formulas (FREE)
Question 1193037: For a quadrilateral ABCD, the measures of its angles are given below.
m∠A = (x + 14)°
m∠B = (2(x + 2))°
m∠C =
3/2
x − 13
°
m∠D =
7/3
x − 14
°Find x.
then, Find the measure of each angle (in degrees) of ABCD.
I'm not sure where to even start here. here's what I got so far: x+14+2x+4=360..and x+10+2x=360...so x+10=360..and i got 36
Click here to see answer by MathTherapy(10552)  |
Question 1193202: EF
is the median of trapezoid ABCD in the figure below. Use the following theorems to answer the questions.
If three (or more) parallel lines intercept congruent line segments on one transversal, then they intercept congruent line segments on any transversal.
The line segment that joins the midpoints of two sides of a triangle is parallel to the third side and has a length equal to one-half the length of the third side.
Suppose that AB = 11.4 and DC = 17.2.
Find MF.
Find EM.
Find EF.
Find
1/2(AB + DC).
Click here to see answer by greenestamps(13200)  |
Question 1193200: In the figure, a ∥ b ∥ c and B is the midpoint of AC.
AB = 2x + 5, BC = x + 7, and DE = 3x + 6.
x =
Find the length of
DE.
DE =
Because a ∥ b ∥ c and B is the midpoint of
AC,E is the midpoint of
DF and EF =
.
Find the length of
EF.
Click here to see answer by Solver92311(821)  |
Question 1193344: EF is the median of trapezoid ABCD in the figure below. Use the following theorems to answer the questions.
If three (or more) parallel lines intercept congruent line segments on one transversal, then they intercept congruent line segments on any transversal.
The line segment that joins the midpoints of two sides of a triangle is parallel to the third side and has a length equal to one-half the length of the third side.
Suppose that AB = 11.4 and DC = 17.2.
Find MF.
Find EM.
Find EF.
Find
1/2(AB + DC).
Click here to see answer by greenestamps(13200)  |
Question 1193594: Two numbers a and b are in the ratio 3 : 4.
Write a proportion involving a and b that equates the two ratios.
=
3
4
If the first number is decreased by 4 and the second is decreased by 2, they are in the ratio 2 : 3.
Write a proportion involving a and b that equates the two ratios.
=
2
3
Apply the Means-Extremes Property to both proportions. Rewrite the equations so that the variables are on the left side.
first proportion
= 0
second proportion
= 8
Find a and b.
a =
b =
Click here to see answer by josgarithmetic(39618) |
Question 1193596: Quadrilateral ABCD ~ quadrilateral HJKL.
Two quadrilaterals are given side by side. The first quadrilateral appears smaller than the second.
The first quadrilaterals has vertices A, B, C, and D.
The first side starts at vertex A, travels down and to the right, and ends at vertex B.
The second side appears horizontal, starts at the bottom left at vertex B, travels to the right, and ends at vertex C.
The third side starts at vertex C, travels up and to the left, and ends at vertex D.
The fourth side starts at vertex D, travels slightly down and to the left, and ends at vertex A.
∠A has 1 arc, ∠B has 2 arcs, ∠C has 3 arcs, and ∠D has 4 arcs.
The second quadrilateral has vertices H, J, K, and L.
The first side starts at vertex H, travels down and to the right, and ends at vertex J.
The second side appears horizontal, starts at the bottom left at vertex J, travels to the right, and ends at vertex K.
The third side starts at vertex K, travels up and to the left, and ends at vertex L.
The fourth side starts at vertex L, travels slightly down and to the left, and ends at vertex H.
∠H has 1 arc, ∠J has 2 arcs, ∠K has 3 arcs, and ∠L has 4 arcs.
If
m∠A = (2x + 3)°, m∠H = 69°, and m∠D = (3x − 9)°, find m∠L in degrees.
m∠L
=
°
Click here to see answer by ikleyn(52788)  |
|
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