SAT Math: Triangles

Lesson: Sum of the Angles in a Triangle

After you watch the lesson above, try this practice problem
The angles of triangle ABC measure 2x, 3x, and 4x. What is the measure of the largest angle?

$20^o$

$40^o$

$80^o$

$90^o$

Lesson: Exterior Angle Theorem

After you watch the lesson above, try this practice problem
The diagram below is not drawn to scale. Solve for the value of x.

120

Lesson: Isoscele Triangles

After you watch the lesson above, try this practice problem
The diagram below is not drawn to scale. Solve for y.

Lesson: Equilateral Triangles

After you watch the lesson above, try this practice problem
The figure below is not to scale. What is the area of the triangle below?

$4\sqrt{3}$

$16\sqrt{3}$

$8$

$8\sqrt{3}$

Lesson: Similar Triangles

After you watch the lesson above, try this practice problem
The diagram below is not to scale. What is the value of x?

$\dfrac{5}{12}$

$3$

$\dfrac{5}{3}$

$\dfrac{4}{3}$

Lesson: Pythagorean Theorem

After you watch the lesson above, try this practice problem
The hypotenuse of a right triangle is 15, and the measure of another leg is 8. What is the measure of the other leg?

$7$

$5\sqrt{3}$

$\sqrt{161}$

$\sqrt{289}$