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alecnewman2002
15.11.2019 •
Mathematics
(geometry a) review of reasoning and proof quiz
1.) what is the inverse of the following statement? if it is raining, then i will carry an umbrella.
2.) write the following reversible statement as a biconditional: if two perpendicular lines intersect, they form four 90° angles.
3.) which reason justifies the statement m< dab that is 100°?
4.) use the vertical angles theorem to name a pair of congruent angles in the image shown.
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Ответ:
1. c If it is not raining, then I will not carry an umbrella.
2.a Two intersecting lines are perpendicular if an only if they form four 90 degree angles.
3.a DAB and EAD are supplementary.
4.c FBY; GBX
Ответ:
2. If two perpendicular lines do not intersect, then they do not form four 90° angles.
3. If <EAD is 80°, then that means <DAB is 100°, because they equal 180°.
4. A pair of congruent angles are <EAC and <DAB
Ответ: