R, S, and T make one triangle. E, F and D make another triangle. <R = 60*, <S = 80*, <F = 60*, <D = 40*, RS = 4, and EF = 4. If the triangles are congruent, which Triangle Congruence Property was used? Which side is congruent to RT?
Yes, by ASA, FD = RT
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15
What is the value of x?
90*
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What is reason #3 in the proof?
Given
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True or False? All equilateral triangles are isosceles.
True
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eraser
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seesaw
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rocket
Go to first place!
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thief
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How does the hypotenuse of a triangle compare to the other legs?
The hypotenuse is the longest side
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How can proving 2 triangles congruent help you prove certain parts of the triangles are congruent?
CPCTC
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The 2 congruent angles in an isosceles triangle are called _____ angles.
Base
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lifesaver
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fairy
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shark
Other team loses 20 points!
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lifesaver
Give 20 points!
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Given RS = ST, <RST = 7x + 2, <STU = 4x. Find the value of x.
x = 182*
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What is the value of y?
50*
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seesaw
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fairy
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rocket
Go to first place!
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baam
Lose 25 points!
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What is statement #4 in the proof?
SD = SD
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What additional information do we need in order to prove these triangles congruent by HL Theorem?
AC = DC or BC = CE or AC = CE or BC = CD
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15
Describe an equilateral triangle by its sides and angles.
