Geometry - ACT Math
Card 1 of 65
What is the formula for the area of a parallelogram?
What is the formula for the area of a parallelogram?
Tap to reveal answer
$A = bh$ where $b$ is the base and $h$ is the perpendicular distance between bases
$A = bh$ where $b$ is the base and $h$ is the perpendicular distance between bases
← Didn't Know|Knew It →
A circle has radius $5$. Find the circumference.
A circle has radius $5$. Find the circumference.
Tap to reveal answer
$10\pi$ ($C = 2\pi(5) = 10\pi$)
$10\pi$ ($C = 2\pi(5) = 10\pi$)
← Didn't Know|Knew It →
What is the formula for the volume of a rectangular prism?
What is the formula for the volume of a rectangular prism?
Tap to reveal answer
$V = lwh$ where $l$ is length, $w$ is width, $h$ is height
$V = lwh$ where $l$ is length, $w$ is width, $h$ is height
← Didn't Know|Knew It →
A rectangular prism has dimensions $5 \times 3 \times 4$. Find the volume.
A rectangular prism has dimensions $5 \times 3 \times 4$. Find the volume.
Tap to reveal answer
$60$ cubic units ($V = 5 \times 3 \times 4 = 60$)
$60$ cubic units ($V = 5 \times 3 \times 4 = 60$)
← Didn't Know|Knew It →
What are supplementary angles?
What are supplementary angles?
Tap to reveal answer
Two angles whose measures add to $180°$
Two angles whose measures add to $180°$
← Didn't Know|Knew It →
What is the slope of a vertical line?
What is the slope of a vertical line?
Tap to reveal answer
Undefined (division by zero; all rise, no run)
Undefined (division by zero; all rise, no run)
← Didn't Know|Knew It →
A right triangle has legs of length $3$ and $4$. Find the hypotenuse.
A right triangle has legs of length $3$ and $4$. Find the hypotenuse.
Tap to reveal answer
$5$ ($3^2 + 4^2 = 9 + 16 = 25 = 5^2$)
$5$ ($3^2 + 4^2 = 9 + 16 = 25 = 5^2$)
← Didn't Know|Knew It →
What is the formula for the area of a rectangle?
What is the formula for the area of a rectangle?
Tap to reveal answer
$A = lw$ where $l$ is length and $w$ is width
$A = lw$ where $l$ is length and $w$ is width
← Didn't Know|Knew It →
Two angles are supplementary. One angle measures $120°$. Find the other angle.
Two angles are supplementary. One angle measures $120°$. Find the other angle.
Tap to reveal answer
$60°$ ($180° - 120° = 60°$)
$60°$ ($180° - 120° = 60°$)
← Didn't Know|Knew It →
A trapezoid has bases $8$ and $12$, and height $5$. Find the area.
A trapezoid has bases $8$ and $12$, and height $5$. Find the area.
Tap to reveal answer
$50$ square units ($A = \dfrac{1}{2}(8 + 12)(5) = \dfrac{1}{2}(20)(5) = 50$)
$50$ square units ($A = \dfrac{1}{2}(8 + 12)(5) = \dfrac{1}{2}(20)(5) = 50$)
← Didn't Know|Knew It →
What is the formula for the area of a triangle?
What is the formula for the area of a triangle?
Tap to reveal answer
$A = \dfrac{1}{2}bh$ where $b$ is the base and $h$ is the height
$A = \dfrac{1}{2}bh$ where $b$ is the base and $h$ is the height
← Didn't Know|Knew It →
What is the slope of a horizontal line?
What is the slope of a horizontal line?
Tap to reveal answer
$0$ (no rise, all run)
$0$ (no rise, all run)
← Didn't Know|Knew It →
In a $45°$-$45°$-$90°$ triangle, each leg has length $5$. Find the hypotenuse.
In a $45°$-$45°$-$90°$ triangle, each leg has length $5$. Find the hypotenuse.
Tap to reveal answer
$5\sqrt{2}$
$5\sqrt{2}$
← Didn't Know|Knew It →
A circle has diameter $8$. Find the area.
A circle has diameter $8$. Find the area.
Tap to reveal answer
$16\pi$ (radius $= 4$, so $A = \pi(4)^2 = 16\pi$)
$16\pi$ (radius $= 4$, so $A = \pi(4)^2 = 16\pi$)
← Didn't Know|Knew It →
Find the slope of the line through $(2, 3)$ and $(6, 11)$.
Find the slope of the line through $(2, 3)$ and $(6, 11)$.
Tap to reveal answer
$2$ ($m = \dfrac{11 - 3}{6 - 2} = \dfrac{8}{4} = 2$)
$2$ ($m = \dfrac{11 - 3}{6 - 2} = \dfrac{8}{4} = 2$)
← Didn't Know|Knew It →
What is the formula for the perimeter of a rectangle?
What is the formula for the perimeter of a rectangle?
Tap to reveal answer
$P = 2l + 2w$ or $P = 2(l + w)$
$P = 2l + 2w$ or $P = 2(l + w)$
← Didn't Know|Knew It →
What are vertical angles?
What are vertical angles?
Tap to reveal answer
Opposite angles formed when two lines intersect; they are always equal
Opposite angles formed when two lines intersect; they are always equal
← Didn't Know|Knew It →
What is the sum of the interior angles of a triangle?
What is the sum of the interior angles of a triangle?
Tap to reveal answer
$180°$
$180°$
← Didn't Know|Knew It →
A cylinder has radius $3$ and height $10$. Find the volume.
A cylinder has radius $3$ and height $10$. Find the volume.
Tap to reveal answer
$90\pi$ ($V = \pi(3)^2(10) = 90\pi$)
$90\pi$ ($V = \pi(3)^2(10) = 90\pi$)
← Didn't Know|Knew It →
What is the formula for the volume of a cylinder?
What is the formula for the volume of a cylinder?
Tap to reveal answer
$V = \pi r^2 h$ where $r$ is radius and $h$ is height
$V = \pi r^2 h$ where $r$ is radius and $h$ is height
← Didn't Know|Knew It →