Triangles
A triangle with at least two equal sides
What is an isosceles triangle?
T/F: Quadrilaterals are polygons.
What is true?
A line with one end point
What is a ray?
Perpendicular lines create this.
What is a right angle?
An X forms two sets of these.
What are vertically opposite angles?
A triangle with no equal sides
What is a scalene triangle?
A figure having at least one pair of parallel lines
What is a trapezoid?
Two rays with the same endpoint
What is an angle?
These lines will never intersect.
What are parallel lines?
On a straight line, there are three angles. One measures 75 degrees, the second measures 76 degrees, so the measure of the third is this.
What is 29 degrees.
A triangle with all 60 degree angles
What is an equilateral (or acute) triangle.
A parallelogram with four right angles
What is a rectangle?
Part of a line contained between two points
What is a line segment?
A capital letter illustrating perpendicular lines
What is capital T?
Angles that meet at a point have this sum.
What is 360 degrees.
T/F: A triangle can have one or more obtuse angles.
False. It can only have one obtuse angle.
Parallelogram with four equal sides and no right angles
What is a rhombus?
The point where an angle is formed
What is a vertex?
Three capital letters illustrating two parallel lines connected by a perpendicular line
What are F, H and I?
An isosceles triangle has two angles measuring 35 degrees each. The measure of the third angle is this.
What is 110 degrees?
Two ways to classify triangles
What are sides or angles?
T/F: A square is a trapezoid.
What is true?
A ray turned completely around a single point
What is a circle?
A given isosceles triangle has two lines which are perpendicular. Therefore, the measure of each of the angles opposite the perpendicular intersection must have a measure of this.
What is 45 degrees?
In parallelogram ABCD, angles B and C will have a sum of this.
What is 180 degrees?