180°
What do all the inside angles of a triangle add up to?
How many sides does a circle have?
0
What are parallel lines?
Lines that will never cross.
What is the slope of a horizontal line?
0
What is the m in slope-intercept form?
The slope of the line.
A triangle where all sides are equal.
What is an equilateral triangle?
If the radius of a circle is 8.2, what is its diameter?
16.4
What are perpendicular lines?
Lines that form a 90° angles.
A positive slope will result in an______ line.
Ascending
What is the slope of y=9/4x - 2?
9/4
A triangle that has one obtuse angle.
What is an obtuse triangle?
What are the first six digits of π?
3.14159
What is the angle between two perpendicular lines?
90°
True or false: all you need to graph a line is its slope?
False
Write the slope-intercept form of a horizontal line with a y-intercept of 3.
y=3
A triangle where every angle is acute.
What is an acute triangle?
If the circumference of a circle is roughly 15, what is its diameter?
~4.7
Angle X is 24° angle Y is 66°, are they complementary, supplementary, or neither?
Complementary
True or false: horizontal lines have no y-intercept?
False
What is the y-intercept of y=4x?
0
An _____ triangle has two equal sides, and a _______ triangle has no equal sides.
What is an isosceles triangle and a scalene triangle?
3.14 x r2 = 3.14 x 9 = 28.26 *r = 3
What is the area of a circle with a radius of 3?
Angle A is 73°, angle B is 17°, are they complementary, supplementary, or neither?
Complementary
Which of these is impossible (undefined) 0x + y = 5, or 2/0x+4=6?
2/0x+4=6
If the y-intercept is not written, what does that mean?
That means that the y-intercept is zero.