The Midline Theorem

Front

In ∆SIE, L and D are the midpoints of SI and IE respectively. If LD is 12, then what is the value of SE?

Back

SE = 24

Front

In ∆SIE, L and D are the midpoints of SI and IE respectively. If SE = 14, then what is the value of LD?

Back

LD = 7

Front

In ∆SIE, L and D are the midpoints of SI and IE respectively. If LI = 18, what is the value of LS?

Back

LS = 18

Front

In ∆SIE, L and D are the midpoints of SI and IE respectively. If LS = 6, ID = 8, and SE = 10, find the perimeter of ∆SIE.

Back

38 units

Front

In ∆SIE, L and D are the midpoints of SI and IE respectively. If IS = 20, IE = 26, and SE = 14, find the perimeter of ∆LID.

Back

30 units

Front

In ∆VES, I and W are the midpoints of VE and ES respectively. If VI = 2x + 5 and IE = 3x - 1, find the value of VE.

Back

VI = 34

Front

In ∆VES, I and W are the midpoints of VE and ES respectively. If IW = 3x + 7 and VS = 26, find the value of x.

Back

x = 2

Front

In ∆VES, I and W are the midpoints of VE and ES respectively. If IW = 5x + 3, and VS = 13x - 6, find the value of IW and VS.

Back

IW = 23, VS = 46

Front

In ∆BNS, O and U are the midpoints of BN and NS respectively. How will you compute the OU?

Back

Front

Complete the segment: The segments whose [1] ________ are the [2] ________ of a two sides of a triangle is [3] ________ to the third side and it has length equal to half the length of the third side.

Back

[1] endpoints, [2] midpoint, [3] parallel