Find QS.
31
The endpoint of AB are A(-4, -8) and B(-1, 4). Find the coordinates of the midpoint M.
(-5/2, -2)
Classify the polygon by the number of sides. Tell whether it is convex or concave.
Triangle; convex
If m∠ABC = 77°, find m∠ABD.
49°
∠1 and ∠2 are complementary angles. If m∠1 = 12°, find m∠2.
78°
Find QS.
12
The midpoint of EF is M(1, -1). One endpoint is E(-3, 2). Find the coordinates of endpoint F.
(5, -4)
Classify the polygon by the number of sides. Tell whether it is convex or concave.
Hexagon; concave
If m∠ABC = 77°, find m∠CBD.
28°
∠3 and ∠4 are supplementary angles. If m∠3 = 56°, find m∠4.
124°
Are point A, R, and B collinear?
No
The endpoint of AB are A(-4, -8) and B(-1, 4). Find the length of AB. Round to the nearest tenth, if necessary.
3sqrt17,
or about 12.4 units
Find the perimeter of the polygon UVW with vertices U(-2, 4), V(3,4), W(3, -4). Round to the nearest hundredth, if necessary.
About 22.43 units
If m∠ABC = 111°, find m∠ABD and m∠CBD.
m∠ABD = 88°
m∠CBD = 23°
∠UVW and ∠XYZ are complementary angles, m∠UVW = (x - 10)°, and m∠XYZ = (4x - 10)°. Find the measure of ∠XYZ.
78°
Are RB and RW opposite rays?
Yes
Point M is the midpoint of AB, where AM = 3x + 8 and MB = 6x - 4. Find AB
40
Find the area of the polygon EFG with vertices E(3, 1), F(3, -2), and G(-2, -2). Round to the nearest tenth, if necessary.
7.5 square units
BD bisects ∠ABC. Find m∠ABD.
m∠ABD = 24°
Find the measures of ∠ADB and ∠BDC formed between the escalators shown.
112°, 68°
Can Plane D also be named plane ART?
No
The coordinate plane shows distances (in feet) on a baseball infield. The pitcher’s plate is about 3 feet closer to home plate than the midpoint between home plate and second base is to home plate. Estimate the distance between home plate and the pitcher’s plate.
About 60.6 feet
Find the perimeter and area of polygon BCEF with vertices B(0, 3), C(4, -1), E(2, -3), and F(-2, 1). Round to the nearest hundredth, if necessary.
P = about 16.97 units
A = 16 square units
BD bisects ∠ABC. Find m∠ABD, m∠CBD, and m∠ABC.
m∠ABD = 44°
m∠CBD = 44°
m∠ABC = 88°
The measure of an angle is 4 times the measure of its supplement. Find the measure of both angles.
144°, 36°