Lines and Angles
What is the name of coplanar lines that never intersect?
Parallel Lines
What is the name of a 4-sided polygon?
Quadrilateral
What does the triangle angle sum theorem say?
If the scale factor is 5/4, Is this an enlargement or reduction?
enlargment
What is the ratio for sine?
opposite/hypotenuse
What is the name of lines that intersect at a 90 degree angle?
Perpendicular lines
What do we know about the opposite angles and sides of a parallelogram?
They're equal (congruent)
What the does the exterior angle theorem say?
The sum of the 2 remote (inside) angles is equal to the exterior angle.
What is a dilation?
A transformation that reduces or enlarges a figure.
When can you use Pythagorean Theorem? (what kind of triangle, what given information, to look for what?)
In a right triangle, GIVEN TWO SIDE LENGTH, to look for the third side.
Fill in the blank:
When parallel lines are cut by a transversal, the angle pair relationships formed are either ________________or _________________.Congruent, Supplementary
What is the best name for a parallelogram with all congruent sides?
Rhombus
What is the best name for a segment that cuts a side in half at a 90 degree angle
perpendicular bisector
What are the two things that make polygons similar?
2. Proportional corresponding sides
In triangle ABC, angle C is 90, AB is 9, AC is 6. Find the measure of angle A and round to the nearest degree.
48 degrees
When parallel lines are cut by a transversal, what is the only angle pair relationship that is supplementary?
Same-sided interior/exterior angles
In rectangle ABCD, diagonal BD and AC intersect at point R. If BR is 7x-2 and RD is 12, what is the value of x?
x= 2
In triangle ABC, median AD intersects median BE at centroid Z. If AZ is 18, what is the length of ZD?
ZD=9
Give the new coordinates of triangle ABC, given the scale factor of 2/3.
A(6, 3)
B(12, 9)
C(15, 6)
A'(4, 2)
B'(8, 6)
C'(10, 4)
A 12 foot ladder is leaning against a building at a 60 degree angle with the ground. How high up does it reach the building? (Round to the tenths)
10.4 ft
Draw and label a pair of alternate interior angles AND same sided interior angles.
Refer to student drawings
In parallelogram ABCD, angle A is 5x and angle B is 120, what is the measure of angle C?
Angle C= 60
In triangle DOG, the midsegment AB is parallel to side GO. If AB is 3x and GO is 5x+4, what is the value of x?
X=4
Given the point B(4,3) find the scale factor if the image is B'(20, 15).
SF: 5
A plane that is 1000 ft in the air starts to descend at an 11 degree angle. What is the horizontal distance covered? (Round to the nearest foot)
2572 ft