51 Answered Questions for the topic Geometry Proofs

09/26/18

#### If angle one and angle two form a linear pair, and angle two and angle three are supplementary, prove angle one and angle three are congruent

lines are two in a somewhat horizontal parrallel that intersect a vertical
angle one is acute and angle two is obtuse

06/03/18

#### how to mathematically prove that a cube consists of 11 nets?

My math teacher and numerous online websites state that a cube has 11 nets. But none of them give a mathematical proof as to why that is. I believe this statement is not important enough for people...
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05/31/18

#### Given: AB is congruent to AC, CB is congruent to CD Prove: AB times DB = (CB)^2

ABC is a large triangle. BCD is inside that triangle. Point D is between A and B.

02/07/18

#### The coordinates of quadrilateral ABCD are A (-1, -5), B (8 ,2 ), C (11, 13) and D (2, 6). Using coordinate geometry, prove that quadrilateral ABCD is a rhombus.

please help me

12/08/17

#### Write a paragraph to prove that the measure of angle 3 is equal to the measure of angle 5.

I don't understand and f i don't answer it ill fail the quiz! Please help, ill do anythiiinnggg!!!!

12/01/17

#### Write a complete proof for the following.

PICTURE: https://pasteboard.co/GWgMblg.png
Given: EC // AB in △ABD
Prove: ∠AEC > ∠B

11/01/17

#### please help i do not know what to do

Write a complete two-column proof for following information:Given: Segment AB = x + 16, Segment BC = 4x + 11 Segment AC = 77Prove: AB = 26

10/11/17

#### Angle 1 and angle 2 are a linear pair; angle 1 and 3 are vertical angles. Prove angle 2 and angle 3 are a linear pair

I need a answer as soon as possible. Please solve in six steps

09/19/17

#### Geometry Challenge

<B is a comp. of <A.<C is a supp. of <B.
<D is a supp. of <C.
<E is a comp. of <D.
<F is a comp. of <E.
<G is a supp. of <F.
Then <G=_?__

04/13/17

#### what is the reason of line AO congruent to line CO

Line AO congruent to line CO . what is the reason ?

03/29/17

#### Given: parallelogram ABCD. Prove: <A=<C and <B=<D

Need help on solving this geometry proof! i am stumped on this question and need help solving it

03/08/17

#### How to prove if a triangle is isosceles.

If you have an isosceles triangle DAE inside another triangle CAB and CD is congruent to EB how do you prove that triangle CAB is isosceles?

02/23/17

#### For Proofs, how do you notice the different properties of equality?

I know that vertical angles are always congruent, but I dont know when to write something for two congruent triangles that are not with vertical angles.

02/06/17

#### Write a plan to prove that the midpoins of the sides of a rhombus determine a rectangle using coordinate geometry.

Full Question: The coordinates for a rhombus are given (2a, 0), (0, 2b), (-2a, 0), (0,-2b). Write a plan to prove that the midpoints of the sides of a rhombus determine a rectangle using...
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01/04/17

#### I do not understand how to do flow/two column/paragraph proofs in geometry.

For example, we are expected to prove that two lines or angles are congruent by postulates. We are also supposed to write a congruence statement AND the parts that make it congruent (3 minimum)....
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12/13/16

#### I thought that isoceles triangles only have 2 congruent sides, and not any more?

i am learning geometry. i was watching a video and for a proof, they said that isoceles triangles have at least 2 congruent sides

12/04/16

#### I need help writing geometric proofs and I don't know how.

All the proofs are either you're trying to prove the figure is a parallelogram or that you're trying to prove the angles are congruent or something else. I don't really understand it and I can't...
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11/28/16

#### Given: line WXY, m<WXZ = 135°. Prove: m<ZXY = 45°

Statements
line WXY
m<WXY = 180°
m<WXZ = 135°
m<WXY = m<WXZ + m<ZXY
180° = 135° + m<ZXY
45° = m<ZXY
m<ZXY = 45°
Reasons
Given
Defintion of supplementary...
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11/27/16

#### Prove using a paragraph proof.

Statements:
9 = 4x - 3(x - 2)
9 = 4x - 3x + 6
9 = x + 6
3 = x
x = 3
Reasons:
Given
Proofs : Fill in the reasons (4) for the statements provided

11/27/16

#### Given: m ⊥ l, n ⊥ l. Prove m || n

Statements:
m ⊥ l, n ⊥ l
<1 is a right angle
<2 is a right angle
<1 =~ <2
m || n
Reasons:
Given
Proofs : Fill in the reasons (4) for the statements...
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11/12/16

#### Given : AB = 8 , AC = 12 , Prove: BC = 4. Give me the statement and reasons.

Geometric Proofs

10/26/16

#### Given line segment BA is perpendicular to line segment BC then <1 and <2 are complementary prove

If two sides are adjacent acute angles are perpendicular, then the angles are complementary... Given line segment BA is perpendicular to line segment BC then <1 and <2 are complementary prove

10/13/16

#### Given: BF bisects ?AFC and ?CFD??BFC Prove:?AFB ? ?CFD

Given: BF bisects ∠AFC and ∠CFD≅∠BFC Prove:∠AFB ≅ ∠CFD

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