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Stack #127374

Straight angle Measure 180
right angle Measures 90
Supplementary angles add up to 180
Complementary angles add up to 90
Vertical Angles Equal angles across a vertice.
Perpendicular lines Cross at 90 degrees
Parallel lines 2 lines that will never cross.
Acute angle less than 90
obtuse angle between 90 and 180.
acute triangle all less than 90
right triangle 1 equals 90
Obtuse triangle 1 measures 90 to 180
Equilateral triangle All angles are the same
Isoceles triangle 2 angle are equal.
Scalene triangle No angles are similar.
quadrilateral four sides, four angles, not same measurements.
Trapezoid One set of parallel sides, quad.
Parallelogram 2 sets of parallel sides, quad.
rhombus parallelogram with four equal sides
Created by: Cyclone0071