12. If a triangle is equilateral, then the median and the altitude are the same segments. 13. The perpendicular bisectors of the sides of a triangle also bisect the angles. 14. Some of the angles in a triangle equal 180°. 15. An altitude of a triangle may fall on the exterior of the triangle. 16. The third angle in a triangle is always the supplement to the sum of the other 2 angles. 17. In a right triangle, the 2 acute angles are always complementary. 18. All squares are also rectangles. 19. A rhombus is always a square. 20. If a figure is a trapezoid, then it is also a parallelogram. 21. The diagonals of a rectangle bisect the angles.
12. If a triangle is equilateral, then the median and the altitude are the same segments. 13. The perpendicular bisectors of the sides of a triangle also bisect the angles. 14. Some of the angles in a triangle equal 180°. 15. An altitude of a triangle may fall on the exterior of the triangle. 16. The third angle in a triangle is always the supplement to the sum of the other 2 angles. 17. In a right triangle, the 2 acute angles are always complementary. 18. All squares are also rectangles. 19. A rhombus is always a square. 20. If a figure is a trapezoid, then it is also a parallelogram. 21. The diagonals of a rectangle bisect the angles.
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 15CT: a Which of these (AB,AB,orAB) represents the length of the line segment AB? b Which (mCBA, mCAB,or,...
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