Triangle Lengths
Is it possible to have a triangle with lengths 3 in., 4 in., and 5 in.?
Yes
In a right triangle, one acute angle measures 40 degrees. What is the other acute angle measure?
50 degrees
True or False? A rhombus is a parallelogram.
True
Polygons with five sides and five vertices
pentagon
Triangles that have all sides equal
equilateral
Is it possible to have a triangle with lengths 13.2 cm, 7.5 cm, and 20.3 cm?
No
In a parallelogram, one pair of opposite angles each measure 110 degrees. What is the measure of each angle in the other pair of opposite angles?
70 degrees
True or False? A trapezoid is a parallelogram.
False
Polygons with three sides and three vertices
triangle
Triangles that have NO equal sides
scalene
In isosceles triangle ABC, AB = 8 in. and BC = 3 in. What is the length of segment AC?
8 in.
What is the measure of each interior angle in a regular pentagon?
108 degreees
Which two quadrilaterals have 4 right angles?
squares and rectangles
Polygons with eight sides and eight vertices
octagon
Triangles that have two equal sides
isosceles
In triangle DEF, angle D measures 20 degrees, angle E measures 60 degrees, and angle F measures 100 degrees. Name the segment of the shortest side.
segment EF
What is the sum of the interior angles in a hexagon?
720 degrees
What is the sum of the interior angle measures in a quadrilateral?
360 degrees
Polygons with six sides and six vertices
hexagon
Triangles that have three angles less than 90 degrees
acute triangle
In triangle JKL, angle J measures 64 degrees, angle K measures 42 degrees, and angle L measures 74 degrees. Name the segment of the longest side.
segment JK
What is the measure of each interior angle in a regular octagon?
135 degrees
What quadrilateral has two pairs of congruent sides, but no parallel sides?
kite
Polygons with nine sides and nine vertices
nonagon
Triangles that have one angle greater than 90 degrees
obtuse