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
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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... more
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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.
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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 
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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!!!!
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12/01/17

Write a complete proof for the following.
PICTURE: https://pasteboard.co/GWgMblg.png Given: EC // AB in △ABD Prove: ∠AEC > ∠B
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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
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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
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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=_?__
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04/13/17

what is the reason of line AO congruent to line CO
Line AO congruent to line CO . what is the reason ?
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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
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03/15/17

I have to add two proportions
I was told to add a2=cd and b2=ce what is the sum?
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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?
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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.
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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... more
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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).... more
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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
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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... more
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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... more
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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
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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... more
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11/12/16

Given : AB = 8 , AC = 12 , Prove: BC = 4. Give me the statement and reasons.
Geometric Proofs
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11/07/16

AB + AB = AC
WHAT IS THE PROOF FOR THIS EQUATION 
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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
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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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