Quarterly Review!!.

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Presentation transcript:

Quarterly Review!!

Fill in the Blank Proof! Given: Picture to the left Prove: x = 40 Statements Reasons <CDE and <EDF are supplementary Linear Pair’s are supplementary <CDE + <EDF = 180 Definition of supplementary x + (3x + 20) = 180 1) 4x + 20 = 180 2) 4x = 160 3) X = 40 4)

Fill in the Blank Proof! Given: XY = 42 Prove: n = 5 Statements Reasons XZ + ZY = XY Segment Addition Postulate XY = 42 1) 3(n+4) + 3n = 42 Substitution 3n + 12 + 3n = 42 2) 3) Combine Like terms 6n = 30 4) N = 5 Division

Find the value of each missing angle!

Find the missing Exterior Angle

Challenge Triangle Problems!

Write the Converse and Biconditional if possible. If a polygon is a rectangle, then it has four sides. If three points are on the same line, then they are collinear If a line is a bisector, then it divides a segment into two congruent parts.